189461965 has 32 divisors (see below), whose sum is σ = 285419520. Its totient is φ = 117288000.

The previous prime is 189461929. The next prime is 189461981. The reversal of 189461965 is 569164981.

It is not a de Polignac number, because 189461965 - 2⁷ = 189461837 is a prime.

It is a super-2 number, since 2×189461965² = 71791672363322450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 56506 + ... + 59764.

It is an arithmetic number, because the mean of its divisors is an integer number (8919360).

Almost surely, 2^189461965 is an apocalyptic number.

It is an amenable number.

189461965 is a deficient number, since it is larger than the sum of its proper divisors (95957555).

189461965 is a wasteful number, since it uses less digits than its factorization.

189461965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433.

The product of its digits is 466560, while the sum is 49.

The square root of 189461965 is about 13764.5183351979. The cubic root of 189461965 is about 574.3465443697.

The spelling of 189461965 in words is "one hundred eighty-nine million, four hundred sixty-one thousand, nine hundred sixty-five".