165158402 has 4 divisors (see below), whose sum is σ = 247737606. Its totient is φ = 82579200.

The previous prime is 165158387. The next prime is 165158437. The reversal of 165158402 is 204851561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 165148201 + 10201 = 12851^2 + 101^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41289599 + ... + 41289602.

Almost surely, 2^165158402 is an apocalyptic number.

165158402 is a deficient number, since it is larger than the sum of its proper divisors (82579204).

165158402 is an equidigital number, since it uses as much as digits as its factorization.

165158402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82579203.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 165158402 is about 12851.3968890545. The cubic root of 165158402 is about 548.6561151331.

The spelling of 165158402 in words is "one hundred sixty-five million, one hundred fifty-eight thousand, four hundred two".