1012151540 has 12 divisors (see below), whose sum is σ = 2125518276. Its totient is φ = 404860608.

The previous prime is 1012151537. The next prime is 1012151557. The reversal of 1012151540 is 451512101.

1012151540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 778856464 + 233295076 = 27908^2 + 15274^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 50607577 = 1012151540 / (1 + 0 + 1 + 2 + 1 + 5 + 1 + 5 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25303769 + ... + 25303808.

It is an arithmetic number, because the mean of its divisors is an integer number (177126523).

Almost surely, 2^1012151540 is an apocalyptic number.

1012151540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012151540 is an abundant number, since it is smaller than the sum of its proper divisors (1113366736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1012151540 is a wasteful number, since it uses less digits than its factorization.

1012151540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50607586 (or 50607584 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1012151540 is about 31814.3291615586. The cubic root of 1012151540 is about 1004.0342165447.

Adding to 1012151540 its reverse (451512101), we get a palindrome (1463663641).

The spelling of 1012151540 in words is "one billion, twelve million, one hundred fifty-one thousand, five hundred forty".