161874260 has 24 divisors (see below), whose sum is σ = 349125000. Its totient is φ = 62999424.

The previous prime is 161874203. The next prime is 161874263. The reversal of 161874260 is 62478161.

It can be written as a sum of positive squares in 4 ways, for example, as 53963716 + 107910544 = 7346^2 + 10388^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161874260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161874263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108635 + ... + 110114.

It is an arithmetic number, because the mean of its divisors is an integer number (14546875).

Almost surely, 2^161874260 is an apocalyptic number.

161874260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161874260 is an abundant number, since it is smaller than the sum of its proper divisors (187250740).

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

161874260 is a wasteful number, since it uses less digits than its factorization.

161874260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218795 (or 218793 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 161874260 is about 12722.9815687990. The cubic root of 161874260 is about 544.9951013784.

The spelling of 161874260 in words is "one hundred sixty-one million, eight hundred seventy-four thousand, two hundred sixty".