1521027879 has 32 divisors (see below), whose sum is σ = 2338068480. Its totient is φ = 861580800.

The previous prime is 1521027869. The next prime is 1521027901. The reversal of 1521027879 is 9787201251.

It is not a de Polignac number, because 1521027879 - 2⁷ = 1521027751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1521027879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521027829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1370977 + ... + 1372085.

It is an arithmetic number, because the mean of its divisors is an integer number (73064640).

Almost surely, 2^1521027879 is an apocalyptic number.

1521027879 is a deficient number, since it is larger than the sum of its proper divisors (817040601).

1521027879 is a wasteful number, since it uses less digits than its factorization.

1521027879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 1521027879 is about 39000.3574214391. The cubic root of 1521027879 is about 1150.0385315382.

The spelling of 1521027879 in words is "one billion, five hundred twenty-one million, twenty-seven thousand, eight hundred seventy-nine".