2538867157 has 4 divisors (see below), whose sum is σ = 2539202380. Its totient is φ = 2538531936.

The previous prime is 2538867151. The next prime is 2538867169. The reversal of 2538867157 is 7517688352.

It is a happy number.

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 2186404081 + 352463076 = 46759^2 + 18774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2538867157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538867151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155982 + ... + 171487.

It is an arithmetic number, because the mean of its divisors is an integer number (634800595).

Almost surely, 2^2538867157 is an apocalyptic number.

It is an amenable number.

2538867157 is a deficient number, since it is larger than the sum of its proper divisors (335223).

2538867157 is an equidigital number, since it uses as much as digits as its factorization.

2538867157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335222.

The product of its digits is 2822400, while the sum is 52.

The square root of 2538867157 is about 50387.1725442101. The cubic root of 2538867157 is about 1364.2061169254.

The spelling of 2538867157 in words is "two billion, five hundred thirty-eight million, eight hundred sixty-seven thousand, one hundred fifty-seven".