190863612 has 36 divisors (see below), whose sum is σ = 495503736. Its totient is φ = 61901280.

The previous prime is 190863593. The next prime is 190863613. The reversal of 190863612 is 216368091.

190863612 is a `hidden beast` number, since 1 + 9 + 0 + 8 + 636 + 12 = 666.

190863612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190863613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70314 + ... + 72977.

Almost surely, 2^190863612 is an apocalyptic number.

190863612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

190863612 is an abundant number, since it is smaller than the sum of its proper divisors (304640124).

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

190863612 is a wasteful number, since it uses less digits than its factorization.

190863612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143338 (or 143333 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 190863612 is about 13815.3397352363. The cubic root of 190863612 is about 575.7594119655.

The spelling of 190863612 in words is "one hundred ninety million, eight hundred sixty-three thousand, six hundred twelve".