6400579031 has 16 divisors (see below), whose sum is σ = 7981751040. Its totient is φ = 4986334080.

The previous prime is 6400579019. The next prime is 6400579037. The reversal of 6400579031 is 1309750046.

It is not a de Polignac number, because 6400579031 - 2⁶ = 6400578967 is a prime.

It is a super-2 number, since 2×6400579031² = 81934823864153797922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6400578982 and 6400579000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400579037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537500 + ... + 549278.

It is an arithmetic number, because the mean of its divisors is an integer number (498859440).

Almost surely, 2^6400579031 is an apocalyptic number.

6400579031 is a deficient number, since it is larger than the sum of its proper divisors (1581172009).

6400579031 is a wasteful number, since it uses less digits than its factorization.

6400579031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18854.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 6400579031 is about 80003.6188618990. The cubic root of 6400579031 is about 1856.6915239196.

The spelling of 6400579031 in words is "six billion, four hundred million, five hundred seventy-nine thousand, thirty-one".