1864893396 has 24 divisors (see below), whose sum is σ = 4580440480. Its totient is φ = 588913632.

The previous prime is 1864893293. The next prime is 1864893419. The reversal of 1864893396 is 6933984681.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 4089451 + ... + 4089906.

Almost surely, 2^1864893396 is an apocalyptic number.

It is an amenable number.

1864893396 is an abundant number, since it is smaller than the sum of its proper divisors (2715547084).

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

1864893396 is a wasteful number, since it uses less digits than its factorization.

1864893396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179383 (or 8179381 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The square root of 1864893396 is about 43184.4114930376. The cubic root of 1864893396 is about 1230.8864863259.

The spelling of 1864893396 in words is "one billion, eight hundred sixty-four million, eight hundred ninety-three thousand, three hundred ninety-six".