162121868 has 12 divisors (see below), whose sum is σ = 290311560. Its totient is φ = 79175712.

The previous prime is 162121853. The next prime is 162121903. The reversal of 162121868 is 868121261.

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, 471113 + ... + 471456.

It is an arithmetic number, because the mean of its divisors is an integer number (24192630).

Almost surely, 2^162121868 is an apocalyptic number.

It is an amenable number.

162121868 is a deficient number, since it is larger than the sum of its proper divisors (128189692).

162121868 is a wasteful number, since it uses less digits than its factorization.

162121868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942616 (or 942614 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 162121868 is about 12732.7085885133. The cubic root of 162121868 is about 545.2728404087.

The spelling of 162121868 in words is "one hundred sixty-two million, one hundred twenty-one thousand, eight hundred sixty-eight".