1528090913 has 4 divisors (see below), whose sum is σ = 1543220628. Its totient is φ = 1512961200.

The previous prime is 1528090901. The next prime is 1528090937. The reversal of 1528090913 is 3190908251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1423703824 + 104387089 = 37732^2 + 10217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1528090913 - 2¹² = 1528086817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1528090943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7564706 + ... + 7564907.

It is an arithmetic number, because the mean of its divisors is an integer number (385805157).

Almost surely, 2^1528090913 is an apocalyptic number.

It is an amenable number.

1528090913 is a deficient number, since it is larger than the sum of its proper divisors (15129715).

1528090913 is a wasteful number, since it uses less digits than its factorization.

1528090913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15129714.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1528090913 is about 39090.8034325211. The cubic root of 1528090913 is about 1151.8158867870.

The spelling of 1528090913 in words is "one billion, five hundred twenty-eight million, ninety thousand, nine hundred thirteen".