162001144 has 64 divisors (see below), whose sum is σ = 336960000. Its totient is φ = 72673920.

The previous prime is 162001139. The next prime is 162001157. The reversal of 162001144 is 441100261.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520749 + ... + 521059.

It is an arithmetic number, because the mean of its divisors is an integer number (5265000).

Almost surely, 2^162001144 is an apocalyptic number.

It is an amenable number.

162001144 is an abundant number, since it is smaller than the sum of its proper divisors (174958856).

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

162001144 is a wasteful number, since it uses less digits than its factorization.

162001144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 162001144 is about 12727.9670018428. The cubic root of 162001144 is about 545.1374610478.

The spelling of 162001144 in words is "one hundred sixty-two million, one thousand, one hundred forty-four".