161486136 has 96 divisors (see below), whose sum is σ = 518394240. Its totient is φ = 46135008.

The previous prime is 161486089. The next prime is 161486141. The reversal of 161486136 is 631684161.

161486136 is a `hidden beast` number, since 1 + 614 + 8 + 6 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 161486136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7675 + ... + 19541.

It is an arithmetic number, because the mean of its divisors is an integer number (5399940).

Almost surely, 2^161486136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161486136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259197120).

161486136 is an abundant number, since it is smaller than the sum of its proper divisors (356908104).

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

161486136 is a wasteful number, since it uses less digits than its factorization.

161486136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895 (or 11879 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 161486136 is about 12707.7195436475. The cubic root of 161486136 is about 544.5591766843.

The spelling of 161486136 in words is "one hundred sixty-one million, four hundred eighty-six thousand, one hundred thirty-six".