162316991 has 16 divisors (see below), whose sum is σ = 171376128. Its totient is φ = 153566400.

The previous prime is 162316949. The next prime is 162316993. The reversal of 162316991 is 199613261.

It is a cyclic number.

It is not a de Polignac number, because 162316991 - 2⁶ = 162316927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162316993) 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, 252116 + ... + 252758.

It is an arithmetic number, because the mean of its divisors is an integer number (10711008).

Almost surely, 2^162316991 is an apocalyptic number.

162316991 is a deficient number, since it is larger than the sum of its proper divisors (9059137).

162316991 is a wasteful number, since it uses less digits than its factorization.

162316991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862.

The product of its digits is 17496, while the sum is 38.

The square root of 162316991 is about 12740.3685582482. The cubic root of 162316991 is about 545.4915084556.

The spelling of 162316991 in words is "one hundred sixty-two million, three hundred sixteen thousand, nine hundred ninety-one".