161535492 has 48 divisors (see below), whose sum is σ = 440843200. Its totient is φ = 51010560.

The previous prime is 161535443. The next prime is 161535497. The reversal of 161535492 is 294535161.

161535492 is a `hidden beast` number, since 1 + 61 + 53 + 549 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (161535497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37309 + ... + 41412.

Almost surely, 2^161535492 is an apocalyptic number.

161535492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161535492 is an abundant number, since it is smaller than the sum of its proper divisors (279307708).

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

161535492 is a wasteful number, since it uses less digits than its factorization.

161535492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78753 (or 78745 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 161535492 is about 12709.6613644896. The cubic root of 161535492 is about 544.6146500222.

The spelling of 161535492 in words is "one hundred sixty-one million, five hundred thirty-five thousand, four hundred ninety-two".