189790361 has 4 divisors (see below), whose sum is σ = 189891792. Its totient is φ = 189688932.

The previous prime is 189790357. The next prime is 189790399. The reversal of 189790361 is 163097981.

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.

It is a cyclic number.

It is not a de Polignac number, because 189790361 - 2² = 189790357 is a prime.

It is a super-2 number, since 2×189790361² = 72040762257020642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189790301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47855 + ... + 51668.

It is an arithmetic number, because the mean of its divisors is an integer number (47472948).

Almost surely, 2^189790361 is an apocalyptic number.

It is an amenable number.

189790361 is a deficient number, since it is larger than the sum of its proper divisors (101431).

189790361 is an equidigital number, since it uses as much as digits as its factorization.

189790361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101430.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 189790361 is about 13776.4422475471. The cubic root of 189790361 is about 574.6781927082.

The spelling of 189790361 in words is "one hundred eighty-nine million, seven hundred ninety thousand, three hundred sixty-one".