190660051 has 4 divisors (see below), whose sum is σ = 190692792. Its totient is φ = 190627312.

The previous prime is 190660037. The next prime is 190660061. The reversal of 190660051 is 150066091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150066091 = 7 ⋅21438013.

It is a cyclic number.

It is not a de Polignac number, because 190660051 - 2⁷ = 190659923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190660021) 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, 5005 + ... + 20158.

It is an arithmetic number, because the mean of its divisors is an integer number (47673198).

Almost surely, 2^190660051 is an apocalyptic number.

190660051 is a deficient number, since it is larger than the sum of its proper divisors (32741).

190660051 is an equidigital number, since it uses as much as digits as its factorization.

190660051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32740.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 190660051 is about 13807.9705605132. The cubic root of 190660051 is about 575.5546516980.

The spelling of 190660051 in words is "one hundred ninety million, six hundred sixty thousand, fifty-one".