161748792 has 128 divisors (see below), whose sum is σ = 466560000. Its totient is φ = 51891840.

The previous prime is 161748791. The next prime is 161748799. The reversal of 161748792 is 297847161.

It is a happy number.

161748792 is a `hidden beast` number, since 161 + 7 + 487 + 9 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161748791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 812709 + ... + 812907.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^161748792 is an apocalyptic number.

161748792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161748792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233280000).

161748792 is an abundant number, since it is smaller than the sum of its proper divisors (304811208).

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

161748792 is a wasteful number, since it uses less digits than its factorization.

161748792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 328 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 161748792 is about 12718.0498505077. The cubic root of 161748792 is about 544.8542572445.

The spelling of 161748792 in words is "one hundred sixty-one million, seven hundred forty-eight thousand, seven hundred ninety-two".