162501978 has 16 divisors (see below), whose sum is σ = 325128960. Its totient is φ = 54146496.

The previous prime is 162501959. The next prime is 162501979. The reversal of 162501978 is 879105261.

It is not an unprimeable number, because it can be changed into a prime (162501979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27351 + ... + 32757.

It is an arithmetic number, because the mean of its divisors is an integer number (20320560).

Almost surely, 2^162501978 is an apocalyptic number.

162501978 is an abundant number, since it is smaller than the sum of its proper divisors (162626982).

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

162501978 is a wasteful number, since it uses less digits than its factorization.

162501978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 162501978 is about 12747.6263672889. The cubic root of 162501978 is about 545.6986556499.

The spelling of 162501978 in words is "one hundred sixty-two million, five hundred one thousand, nine hundred seventy-eight".