6405631092 has 96 divisors (see below), whose sum is σ = 19337875200. Its totient is φ = 1795637376.

The previous prime is 6405631061. The next prime is 6405631097. The reversal of 6405631092 is 2901365046.

It is a happy number.

6405631092 is a `hidden beast` number, since 6 + 4 + 0 + 563 + 1 + 0 + 92 = 666.

It is a super-2 number, since 2×6405631092² = 82064219373594224928, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405631097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39867 + ... + 120002.

It is an arithmetic number, because the mean of its divisors is an integer number (201436200).

Almost surely, 2^6405631092 is an apocalyptic number.

It is an amenable number.

6405631092 is an abundant number, since it is smaller than the sum of its proper divisors (12932244108).

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

6405631092 is a wasteful number, since it uses less digits than its factorization.

6405631092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159942 (or 159934 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6405631092 is about 80035.1865869006. The cubic root of 6405631092 is about 1857.1798991079.

The spelling of 6405631092 in words is "six billion, four hundred five million, six hundred thirty-one thousand, ninety-two".