162920985 has 16 divisors (see below), whose sum is σ = 269663040. Its totient is φ = 83894720.

The previous prime is 162920981. The next prime is 162920987. The reversal of 162920985 is 589029261.

It is not a de Polignac number, because 162920985 - 2² = 162920981 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (162920981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186831 + ... + 187700.

It is an arithmetic number, because the mean of its divisors is an integer number (16853940).

Almost surely, 2^162920985 is an apocalyptic number.

162920985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162920985 is a deficient number, since it is larger than the sum of its proper divisors (106742055).

162920985 is a wasteful number, since it uses less digits than its factorization.

162920985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374568.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 162920985 is about 12764.0504934758. The cubic root of 162920985 is about 546.1672762302.

The spelling of 162920985 in words is "one hundred sixty-two million, nine hundred twenty thousand, nine hundred eighty-five".