161019392 has 20 divisors (see below), whose sum is σ = 321725316. Its totient is φ = 80509440.

The previous prime is 161019377. The next prime is 161019421. The reversal of 161019392 is 293910161.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156734 + ... + 157757.

Almost surely, 2^161019392 is an apocalyptic number.

It is an amenable number.

161019392 is a deficient number, since it is larger than the sum of its proper divisors (160705924).

161019392 is an frugal number, since it uses more digits than its factorization.

161019392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314509 (or 314493 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 161019392 is about 12689.3416692908. The cubic root of 161019392 is about 544.0340232469.

The spelling of 161019392 in words is "one hundred sixty-one million, nineteen thousand, three hundred ninety-two".