2539379520 has 84 divisors (see below), whose sum is σ = 8734417380. Its totient is φ = 677167104.

The previous prime is 2539379509. The next prime is 2539379527. The reversal of 2539379520 is 259739352.

2539379520 is a `hidden beast` number, since 2 + 53 + 9 + 3 + 79 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1038901824 + 1500477696 = 32232^2 + 38736^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539379527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437985 + ... + 443744.

Almost surely, 2^2539379520 is an apocalyptic number.

2539379520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2539379520 is an abundant number, since it is smaller than the sum of its proper divisors (6195037860).

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

2539379520 is a wasteful number, since it uses less digits than its factorization.

2539379520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881752 (or 881739 counting only the distinct ones).

The product of its (nonzero) digits is 510300, while the sum is 45.

The square root of 2539379520 is about 50392.2565480055. The cubic root of 2539379520 is about 1364.2978798630.

The spelling of 2539379520 in words is "two billion, five hundred thirty-nine million, three hundred seventy-nine thousand, five hundred twenty".