161259480 has 48 divisors (see below), whose sum is σ = 524094480. Its totient is φ = 43002432.

The previous prime is 161259377. The next prime is 161259481. The reversal of 161259480 is 84952161.

161259480 is a `hidden beast` number, since 1 + 61 + 2 + 594 + 8 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161259481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223612 + ... + 224331.

It is an arithmetic number, because the mean of its divisors is an integer number (10918635).

Almost surely, 2^161259480 is an apocalyptic number.

161259480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161259480 is an abundant number, since it is smaller than the sum of its proper divisors (362835000).

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

161259480 is a wasteful number, since it uses less digits than its factorization.

161259480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447960 (or 447953 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 161259480 is about 12698.7983683497. The cubic root of 161259480 is about 544.3042829846.

The spelling of 161259480 in words is "one hundred sixty-one million, two hundred fifty-nine thousand, four hundred eighty".