190927057 has 4 divisors (see below), whose sum is σ = 191246400. Its totient is φ = 190607716.

The previous prime is 190927049. The next prime is 190927063. The reversal of 190927057 is 750729091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750729091 = 7 ⋅107247013.

It is a cyclic number.

It is not a de Polignac number, because 190927057 - 2³ = 190927049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190927027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158773 + ... + 159970.

It is an arithmetic number, because the mean of its divisors is an integer number (47811600).

Almost surely, 2^190927057 is an apocalyptic number.

It is an amenable number.

190927057 is a deficient number, since it is larger than the sum of its proper divisors (319343).

190927057 is an equidigital number, since it uses as much as digits as its factorization.

190927057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319342.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 190927057 is about 13817.6357239580. The cubic root of 190927057 is about 575.8232009869.

The spelling of 190927057 in words is "one hundred ninety million, nine hundred twenty-seven thousand, fifty-seven".