1357978864 has 40 divisors (see below), whose sum is σ = 2872816128. Its totient is φ = 616716480.

The previous prime is 1357978823. The next prime is 1357978877. The reversal of 1357978864 is 4688797531.

It is a super-3 number, since 3×1357978864³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1357978799 and 1357978808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248449 + ... + 253855.

Almost surely, 2^1357978864 is an apocalyptic number.

It is an amenable number.

1357978864 is an abundant number, since it is smaller than the sum of its proper divisors (1514837264).

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

1357978864 is a wasteful number, since it uses less digits than its factorization.

1357978864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853 (or 6847 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The square root of 1357978864 is about 36850.7647681836. The cubic root of 1357978864 is about 1107.3825359711.

The spelling of 1357978864 in words is "one billion, three hundred fifty-seven million, nine hundred seventy-eight thousand, eight hundred sixty-four".