161349492 has 12 divisors (see below), whose sum is σ = 376482176. Its totient is φ = 53783160.

The previous prime is 161349469. The next prime is 161349493. The reversal of 161349492 is 294943161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 161349492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161349493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6722884 + ... + 6722907.

Almost surely, 2^161349492 is an apocalyptic number.

161349492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161349492 is an abundant number, since it is smaller than the sum of its proper divisors (215132684).

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

161349492 is a wasteful number, since it uses less digits than its factorization.

161349492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445798 (or 13445796 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 161349492 is about 12702.3419887830. The cubic root of 161349492 is about 544.4055376088.

The spelling of 161349492 in words is "one hundred sixty-one million, three hundred forty-nine thousand, four hundred ninety-two".