164492442 has 72 divisors (see below), whose sum is σ = 383519136. Its totient is φ = 50937984.

The previous prime is 164492423. The next prime is 164492453. The reversal of 164492442 is 244294461.

It is a happy number.

164492442 is a `hidden beast` number, since 1 + 644 + 9 + 2 + 4 + 4 + 2 = 666.

Its product of digits (55296) is a multiple of the sum of its prime divisors (432).

It is a junction number, because it is equal to n+sod(n) for n = 164492397 and 164492406.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 535653 + ... + 535959.

Almost surely, 2^164492442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164492442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191759568).

164492442 is an abundant number, since it is smaller than the sum of its proper divisors (219026694).

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

164492442 is a wasteful number, since it uses less digits than its factorization.

164492442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 432 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 164492442 is about 12825.4606934800. The cubic root of 164492442 is about 547.9176821492.

The spelling of 164492442 in words is "one hundred sixty-four million, four hundred ninety-two thousand, four hundred forty-two".