162939381 has 16 divisors (see below), whose sum is σ = 237427200. Its totient is φ = 98574320.

The previous prime is 162939367. The next prime is 162939389. The reversal of 162939381 is 183939261.

It is a cyclic number.

It is not a de Polignac number, because 162939381 - 2⁷ = 162939253 is a prime.

It is a super-2 number, since 2×162939381² = 53098483761326322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162939389) 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, 15646 + ... + 23888.

It is an arithmetic number, because the mean of its divisors is an integer number (14839200).

Almost surely, 2^162939381 is an apocalyptic number.

162939381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162939381 is a deficient number, since it is larger than the sum of its proper divisors (74487819).

162939381 is a wasteful number, since it uses less digits than its factorization.

162939381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856.

The product of its digits is 69984, while the sum is 42.

The square root of 162939381 is about 12764.7710907795. The cubic root of 162939381 is about 546.1878320333.

The spelling of 162939381 in words is "one hundred sixty-two million, nine hundred thirty-nine thousand, three hundred eighty-one".