161546736 has 80 divisors (see below), whose sum is σ = 461644064. Its totient is φ = 48356352.

The previous prime is 161546713. The next prime is 161546741. The reversal of 161546736 is 637645161.

161546736 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 161546694 and 161546703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19590 + ... + 26586.

Almost surely, 2^161546736 is an apocalyptic number.

161546736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161546736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230822032).

161546736 is an abundant number, since it is smaller than the sum of its proper divisors (300097328).

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

161546736 is a wasteful number, since it uses less digits than its factorization.

161546736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058 (or 7052 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 161546736 is about 12710.1036974527. The cubic root of 161546736 is about 544.6272860586.

It can be divided in two parts, 1615467 and 36, that added together give a triangular number (1615503 = T₁₇₉₇).

The spelling of 161546736 in words is "one hundred sixty-one million, five hundred forty-six thousand, seven hundred thirty-six".