162664290 has 48 divisors (see below), whose sum is σ = 424797048. Its totient is φ = 43185408.

The previous prime is 162664273. The next prime is 162664319. The reversal of 162664290 is 92466261.

162664290 is a `hidden beast` number, since 1 + 6 + 2 + 6 + 642 + 9 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 132227001 + 30437289 = 11499^2 + 5517^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17092 + ... + 24848.

Almost surely, 2^162664290 is an apocalyptic number.

162664290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 162664290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212398524).

162664290 is an abundant number, since it is smaller than the sum of its proper divisors (262132758).

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

162664290 is a wasteful number, since it uses less digits than its factorization.

162664290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003 (or 8000 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 162664290 is about 12753.9911400314. The cubic root of 162664290 is about 545.8802820885.

The spelling of 162664290 in words is "one hundred sixty-two million, six hundred sixty-four thousand, two hundred ninety".