162195780 has 96 divisors (see below), whose sum is σ = 484848000. Its totient is φ = 40393728.

The previous prime is 162195773. The next prime is 162195791. The reversal of 162195780 is 87591261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82246 + ... + 84194.

It is an arithmetic number, because the mean of its divisors is an integer number (5050500).

Almost surely, 2^162195780 is an apocalyptic number.

162195780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162195780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242424000).

162195780 is an abundant number, since it is smaller than the sum of its proper divisors (322652220).

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

162195780 is a wasteful number, since it uses less digits than its factorization.

162195780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2051 counting only the distinct ones).

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

The square root of 162195780 is about 12735.6107038493. The cubic root of 162195780 is about 545.3556918332.

The spelling of 162195780 in words is "one hundred sixty-two million, one hundred ninety-five thousand, seven hundred eighty".