161453400 has 48 divisors (see below), whose sum is σ = 500507400. Its totient is φ = 43054080.

The previous prime is 161453381. The next prime is 161453401. The reversal of 161453400 is 4354161.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161453401) 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, 133945 + ... + 135144.

Almost surely, 2^161453400 is an apocalyptic number.

161453400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161453400 is an abundant number, since it is smaller than the sum of its proper divisors (339054000).

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

161453400 is a wasteful number, since it uses less digits than its factorization.

161453400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269108 (or 269099 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 161453400 is about 12706.4314423838. The cubic root of 161453400 is about 544.5223770465.

The spelling of 161453400 in words is "one hundred sixty-one million, four hundred fifty-three thousand, four hundred".