190953990 has 64 divisors (see below), whose sum is σ = 536025600. Its totient is φ = 48239712.

The previous prime is 190953977. The next prime is 190954021. The reversal of 190953990 is 99359091.

190953990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13482 + ... + 23741.

It is an arithmetic number, because the mean of its divisors is an integer number (8375400).

Almost surely, 2^190953990 is an apocalyptic number.

190953990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190953990 is an abundant number, since it is smaller than the sum of its proper divisors (345071610).

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

190953990 is a wasteful number, since it uses less digits than its factorization.

190953990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37258 (or 37252 counting only the distinct ones).

The product of its (nonzero) digits is 98415, while the sum is 45.

The square root of 190953990 is about 13818.6102774483. The cubic root of 190953990 is about 575.8502757545.

The spelling of 190953990 in words is "one hundred ninety million, nine hundred fifty-three thousand, nine hundred ninety".