2499897537 has 6 divisors (see below), whose sum is σ = 3610963122. Its totient is φ = 1666598352.

The previous prime is 2499897529. The next prime is 2499897539. The reversal of 2499897537 is 7357989942.

2499897537 is a `hidden beast` number, since 2 + 4 + 9 + 9 + 8 + 97 + 537 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2423002176 + 76895361 = 49224^2 + 8769^2 .

It is not a de Polignac number, because 2499897537 - 2³ = 2499897529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2499897539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138883188 + ... + 138883205.

It is an arithmetic number, because the mean of its divisors is an integer number (601827187).

Almost surely, 2^2499897537 is an apocalyptic number.

It is an amenable number.

2499897537 is a deficient number, since it is larger than the sum of its proper divisors (1111065585).

2499897537 is a wasteful number, since it uses less digits than its factorization.

2499897537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277766399 (or 277766396 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The square root of 2499897537 is about 49998.9753595011. The cubic root of 2499897537 is about 1357.1902662193.

The spelling of 2499897537 in words is "two billion, four hundred ninety-nine million, eight hundred ninety-seven thousand, five hundred thirty-seven".