1393857012 has 24 divisors (see below), whose sum is σ = 3300877216. Its totient is φ = 457684128.

The previous prime is 1393856987. The next prime is 1393857029. The reversal of 1393857012 is 2107583931.

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, 866023 + ... + 867630.

Almost surely, 2^1393857012 is an apocalyptic number.

1393857012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1393857012 is an abundant number, since it is smaller than the sum of its proper divisors (1907020204).

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

1393857012 is a wasteful number, since it uses less digits than its factorization.

1393857012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733727 (or 1733725 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1393857012 is about 37334.3944908713. The cubic root of 1393857012 is about 1117.0503305207.

The spelling of 1393857012 in words is "one billion, three hundred ninety-three million, eight hundred fifty-seven thousand, twelve".