190457 has 4 divisors (see below), whose sum is σ = 193140. Its totient is φ = 187776.

The previous prime is 190409. The next prime is 190471. The reversal of 190457 is 754091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99856 + 90601 = 316^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 190457 - 2¹⁰ = 189433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190357) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1232 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (48285).

2¹⁹⁰⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

190457 is a deficient number, since it is larger than the sum of its proper divisors (2683).

190457 is an equidigital number, since it uses as much as digits as its factorization.

190457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 190457 is about 436.4137944658. The cubic root of 190457 is about 57.5350259187.

The spelling of 190457 in words is "one hundred ninety thousand, four hundred fifty-seven".