162991038 has 32 divisors (see below), whose sum is σ = 375496704. Its totient is φ = 46200672.

The previous prime is 162991021. The next prime is 162991051. The reversal of 162991038 is 830199261.

It is a junction number, because it is equal to n+sod(n) for n = 162990987 and 162991005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9945 + ... + 20612.

It is an arithmetic number, because the mean of its divisors is an integer number (11734272).

Almost surely, 2^162991038 is an apocalyptic number.

162991038 is an abundant number, since it is smaller than the sum of its proper divisors (212505666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162991038 is a wasteful number, since it uses less digits than its factorization.

162991038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30696.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 162991038 is about 12766.7943509716. The cubic root of 162991038 is about 546.2455456107.

The spelling of 162991038 in words is "one hundred sixty-two million, nine hundred ninety-one thousand, thirty-eight".