161938092 has 24 divisors (see below), whose sum is σ = 378070000. Its totient is φ = 53948736.

The previous prime is 161938087. The next prime is 161938093. The reversal of 161938092 is 290839161.

It is a self number, because there is not a number n which added to its sum of digits gives 161938092.

It is not an unprimeable number, because it can be changed into a prime (161938093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30534 + ... + 35442.

Almost surely, 2^161938092 is an apocalyptic number.

161938092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161938092 is an abundant number, since it is smaller than the sum of its proper divisors (216131908).

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

161938092 is a wasteful number, since it uses less digits than its factorization.

161938092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665 (or 7663 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 161938092 is about 12725.4898530469. The cubic root of 161938092 is about 545.0667280752.

The spelling of 161938092 in words is "one hundred sixty-one million, nine hundred thirty-eight thousand, ninety-two".