161383400 has 24 divisors (see below), whose sum is σ = 375216870. Its totient is φ = 64553280.

The previous prime is 161383379. The next prime is 161383423. The reversal of 161383400 is 4383161.

161383400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 82919236 + 78464164 = 9106^2 + 8858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161383400.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403259 + ... + 403658.

Almost surely, 2^161383400 is an apocalyptic number.

161383400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161383400 is an abundant number, since it is smaller than the sum of its proper divisors (213833470).

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

161383400 is a wasteful number, since it uses less digits than its factorization.

161383400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806933 (or 806924 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 161383400 is about 12703.6766331641. The cubic root of 161383400 is about 544.4436710002.

The spelling of 161383400 in words is "one hundred sixty-one million, three hundred eighty-three thousand, four hundred".