161338260 has 96 divisors (see below), whose sum is σ = 470679552. Its totient is φ = 41247360.

The previous prime is 161338259. The next prime is 161338271. The reversal of 161338260 is 62833161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235879 + ... + 236561.

It is an arithmetic number, because the mean of its divisors is an integer number (4902912).

Almost surely, 2^161338260 is an apocalyptic number.

161338260 is a gapful number since it is divisible by the number (10) 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 161338260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235339776).

161338260 is an abundant number, since it is smaller than the sum of its proper divisors (309341292).

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

161338260 is a wasteful number, since it uses less digits than its factorization.

161338260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 161338260 is about 12701.8998578953. The cubic root of 161338260 is about 544.3929047730.

The spelling of 161338260 in words is "one hundred sixty-one million, three hundred thirty-eight thousand, two hundred sixty".