6431091048 has 48 divisors (see below), whose sum is σ = 17422481700. Its totient is φ = 2143088640.

The previous prime is 6431091047. The next prime is 6431091053. The reversal of 6431091048 is 8401901346.

6431091048 is a `hidden beast` number, since 643 + 1 + 0 + 9 + 1 + 0 + 4 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5044124484 + 1386966564 = 71022^2 + 37242^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6431091047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293928 + ... + 315048.

Almost surely, 2^6431091048 is an apocalyptic number.

It is an amenable number.

6431091048 is an abundant number, since it is smaller than the sum of its proper divisors (10991390652).

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

6431091048 is a wasteful number, since it uses less digits than its factorization.

6431091048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25362 (or 25355 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 6431091048 is about 80194.0836221725. The cubic root of 6431091048 is about 1859.6371751538.

The spelling of 6431091048 in words is "six billion, four hundred thirty-one million, ninety-one thousand, forty-eight".