190965820 has 48 divisors (see below), whose sum is σ = 407484000. Its totient is φ = 75168000.

The previous prime is 190965809. The next prime is 190965889. The reversal of 190965820 is 28569091.

190965820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 547006 + ... + 547354.

It is an arithmetic number, because the mean of its divisors is an integer number (8489250).

Almost surely, 2^190965820 is an apocalyptic number.

190965820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190965820 is an abundant number, since it is smaller than the sum of its proper divisors (216518180).

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

190965820 is a wasteful number, since it uses less digits than its factorization.

190965820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 190965820 is about 13819.0383167571. The cubic root of 190965820 is about 575.8621672195.

The spelling of 190965820 in words is "one hundred ninety million, nine hundred sixty-five thousand, eight hundred twenty".