189699965 has 32 divisors (see below), whose sum is σ = 281944320. Its totient is φ = 120025152.

The previous prime is 189699959. The next prime is 189699973. The reversal of 189699965 is 569996981.

It is not a de Polignac number, because 189699965 - 2⁶ = 189699901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189699898 and 189699907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75662 + ... + 78128.

It is an arithmetic number, because the mean of its divisors is an integer number (8810760).

Almost surely, 2^189699965 is an apocalyptic number.

It is an amenable number.

189699965 is a deficient number, since it is larger than the sum of its proper divisors (92244355).

189699965 is an equidigital number, since it uses as much as digits as its factorization.

189699965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518 (or 2492 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 62.

The square root of 189699965 is about 13773.1610387739. The cubic root of 189699965 is about 574.5869396375.

The spelling of 189699965 in words is "one hundred eighty-nine million, six hundred ninety-nine thousand, nine hundred sixty-five".