165213402 has 16 divisors (see below), whose sum is σ = 336661920. Its totient is φ = 54031952.

The previous prime is 165213397. The next prime is 165213421. The reversal of 165213402 is 204312561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259452 + ... + 260087.

It is an arithmetic number, because the mean of its divisors is an integer number (21041370).

Almost surely, 2^165213402 is an apocalyptic number.

165213402 is an abundant number, since it is smaller than the sum of its proper divisors (171448518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165213402 is a wasteful number, since it uses less digits than its factorization.

165213402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519597.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 165213402 is about 12853.5365561389. The cubic root of 165213402 is about 548.7170116965.

Adding to 165213402 its reverse (204312561), we get a palindrome (369525963).

The spelling of 165213402 in words is "one hundred sixty-five million, two hundred thirteen thousand, four hundred two".