161793536 has 20 divisors (see below), whose sum is σ = 323272092. Its totient is φ = 80896512.

The previous prime is 161793529. The next prime is 161793553. The reversal of 161793536 is 635397161.

It is a junction number, because it is equal to n+sod(n) for n = 161793493 and 161793502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157490 + ... + 158513.

Almost surely, 2^161793536 is an apocalyptic number.

161793536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161793536 is a deficient number, since it is larger than the sum of its proper divisors (161478556).

161793536 is an frugal number, since it uses more digits than its factorization.

161793536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316021 (or 316005 counting only the distinct ones).

The product of its digits is 102060, while the sum is 41.

The square root of 161793536 is about 12719.8088035945. The cubic root of 161793536 is about 544.9044929855.

The spelling of 161793536 in words is "one hundred sixty-one million, seven hundred ninety-three thousand, five hundred thirty-six".