165964402 has 8 divisors (see below), whose sum is σ = 250595712. Its totient is φ = 82432500.

The previous prime is 165964397. The next prime is 165964439. The reversal of 165964402 is 204469561.

165964402 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274474 + ... + 275077.

It is an arithmetic number, because the mean of its divisors is an integer number (31324464).

Almost surely, 2^165964402 is an apocalyptic number.

165964402 is a deficient number, since it is larger than the sum of its proper divisors (84631310).

165964402 is a wasteful number, since it uses less digits than its factorization.

165964402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549704.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 165964402 is about 12882.7171823339. The cubic root of 165964402 is about 549.5471777009.

The spelling of 165964402 in words is "one hundred sixty-five million, nine hundred sixty-four thousand, four hundred two".