1190863920 has 80 divisors (see below), whose sum is σ = 3695379552. Its totient is φ = 317245440.

The previous prime is 1190863897. The next prime is 1190863967. The reversal of 1190863920 is 293680911.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329644 + ... + 333236.

Almost surely, 2^1190863920 is an apocalyptic number.

1190863920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1190863920 is an abundant number, since it is smaller than the sum of its proper divisors (2504515632).

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

1190863920 is a wasteful number, since it uses less digits than its factorization.

1190863920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990 (or 4984 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1190863920 is about 34508.8962443020. The cubic root of 1190863920 is about 1059.9548811934.

The spelling of 1190863920 in words is "one billion, one hundred ninety million, eight hundred sixty-three thousand, nine hundred twenty".