2634157863 has 24 divisors (see below), whose sum is σ = 3865820400. Its totient is φ = 1728042624.

The previous prime is 2634157849. The next prime is 2634157913. The reversal of 2634157863 is 3687514362.

2634157863 is a `hidden beast` number, since 2 + 634 + 1 + 5 + 7 + 8 + 6 + 3 = 666.

It is not a de Polignac number, because 2634157863 - 2¹⁴ = 2634141479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2634157843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 775573 + ... + 778961.

It is an arithmetic number, because the mean of its divisors is an integer number (161075850).

Almost surely, 2^2634157863 is an apocalyptic number.

2634157863 is a deficient number, since it is larger than the sum of its proper divisors (1231662537).

2634157863 is a wasteful number, since it uses less digits than its factorization.

2634157863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751 (or 4748 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 2634157863 is about 51324.0476092835. The cubic root of 2634157863 is about 1381.0644072198.

The spelling of 2634157863 in words is "two billion, six hundred thirty-four million, one hundred fifty-seven thousand, eight hundred sixty-three".