161388480 has 448 divisors, whose sum is σ = 632033280. Its totient is φ = 34406400.

The previous prime is 161388457. The next prime is 161388481. The reversal of 161388480 is 84883161.

161388480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161388481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5206065 + ... + 5206095.

Almost surely, 2^161388480 is an apocalyptic number.

161388480 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 161388480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316016640).

161388480 is an abundant number, since it is smaller than the sum of its proper divisors (470644800).

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

161388480 is a wasteful number, since it uses less digits than its factorization.

161388480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 161388480 is about 12703.8765737077. The cubic root of 161388480 is about 544.4493835762.

The spelling of 161388480 in words is "one hundred sixty-one million, three hundred eighty-eight thousand, four hundred eighty".