1393865152 has 84 divisors (see below), whose sum is σ = 2896517448. Its totient is φ = 665433600.

The previous prime is 1393865141. The next prime is 1393865171. The reversal of 1393865152 is 2515683931.

It is a junction number, because it is equal to n+sod(n) for n = 1393865099 and 1393865108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8056938 + ... + 8057110.

Almost surely, 2^1393865152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1393865152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448258724).

1393865152 is an abundant number, since it is smaller than the sum of its proper divisors (1502652296).

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

1393865152 is a wasteful number, since it uses less digits than its factorization.

1393865152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 337 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 1393865152 is about 37334.5035054706. The cubic root of 1393865152 is about 1117.0525050078.

The spelling of 1393865152 in words is "one billion, three hundred ninety-three million, eight hundred sixty-five thousand, one hundred fifty-two".