162999971 has 4 divisors (see below), whose sum is σ = 166790712. Its totient is φ = 159209232.

The previous prime is 162999959. The next prime is 163000003. The reversal of 162999971 is 179999261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 162999971 - 2¹⁰ = 162998947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162999931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895306 + ... + 1895391.

It is an arithmetic number, because the mean of its divisors is an integer number (41697678).

Almost surely, 2^162999971 is an apocalyptic number.

162999971 is a deficient number, since it is larger than the sum of its proper divisors (3790741).

162999971 is an equidigital number, since it uses as much as digits as its factorization.

162999971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790740.

The product of its digits is 551124, while the sum is 53.

The square root of 162999971 is about 12767.1441990760. The cubic root of 162999971 is about 546.2555247326.

The spelling of 162999971 in words is "one hundred sixty-two million, nine hundred ninety-nine thousand, nine hundred seventy-one".