162791985 has 16 divisors (see below), whose sum is σ = 260804160. Its totient is φ = 86710080.

The previous prime is 162791963. The next prime is 162791987. The reversal of 162791985 is 589197261.

It is not a de Polignac number, because 162791985 - 2⁶ = 162791921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (162791987) 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, 5706 + ... + 18924.

It is an arithmetic number, because the mean of its divisors is an integer number (16300260).

Almost surely, 2^162791985 is an apocalyptic number.

162791985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162791985 is a deficient number, since it is larger than the sum of its proper divisors (98012175).

162791985 is a wasteful number, since it uses less digits than its factorization.

162791985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14048.

The product of its digits is 272160, while the sum is 48.

The square root of 162791985 is about 12758.9962379491. The cubic root of 162791985 is about 546.0230873518.

The spelling of 162791985 in words is "one hundred sixty-two million, seven hundred ninety-one thousand, nine hundred eighty-five".