162991338 has 16 divisors (see below), whose sum is σ = 326141856. Its totient is φ = 54303920.

The previous prime is 162991337. The next prime is 162991343. The reversal of 162991338 is 833199261.

It is a self number, because there is not a number n which added to its sum of digits gives 162991338.

It is not an unprimeable number, because it can be changed into a prime (162991337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9820 + ... + 20552.

It is an arithmetic number, because the mean of its divisors is an integer number (20383866).

Almost surely, 2^162991338 is an apocalyptic number.

162991338 is an abundant number, since it is smaller than the sum of its proper divisors (163150518).

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

162991338 is a wasteful number, since it uses less digits than its factorization.

162991338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13269.

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

The square root of 162991338 is about 12766.8061001959. The cubic root of 162991338 is about 546.2458807489.

The spelling of 162991338 in words is "one hundred sixty-two million, nine hundred ninety-one thousand, three hundred thirty-eight".