6318457641 has 12 divisors (see below), whose sum is σ = 9127364532. Its totient is φ = 4211980416.

The previous prime is 6318457591. The next prime is 6318457661. The reversal of 6318457641 is 1467548136.

6318457641 is a `hidden beast` number, since 6 + 31 + 8 + 4 + 576 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2098006416 + 4220451225 = 45804^2 + 64965^2 .

It is not a de Polignac number, because 6318457641 - 2⁶ = 6318457577 is a prime.

It is a super-2 number, since 2×6318457641² = 79845813922222569762, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6318457661) 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, 177925 + ... + 210461.

It is an arithmetic number, because the mean of its divisors is an integer number (760613711).

Almost surely, 2^6318457641 is an apocalyptic number.

It is an amenable number.

6318457641 is a deficient number, since it is larger than the sum of its proper divisors (2808906891).

6318457641 is a wasteful number, since it uses less digits than its factorization.

6318457641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54120 (or 54117 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 6318457641 is about 79488.7265025676. The cubic root of 6318457641 is about 1848.7166791087.

The spelling of 6318457641 in words is "six billion, three hundred eighteen million, four hundred fifty-seven thousand, six hundred forty-one".