2538811631 has 2 divisors, whose sum is σ = 2538811632. Its totient is φ = 2538811630.

The previous prime is 2538811621. The next prime is 2538811657. The reversal of 2538811631 is 1361188352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2538811631 - 2¹⁰ = 2538810607 is a prime.

It is a super-2 number, since 2×2538811631² = 12891128995401760322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2538811621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269405815 + 1269405816.

It is an arithmetic number, because the mean of its divisors is an integer number (1269405816).

Almost surely, 2^2538811631 is an apocalyptic number.

2538811631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2538811631 is an equidigital number, since it uses as much as digits as its factorization.

2538811631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 2538811631 is about 50386.6215477879. The cubic root of 2538811631 is about 1364.1961716157.

Adding to 2538811631 its reverse (1361188352), we get a palindrome (3899999983).

The spelling of 2538811631 in words is "two billion, five hundred thirty-eight million, eight hundred eleven thousand, six hundred thirty-one".