161801450 has 24 divisors (see below), whose sum is σ = 301334880. Its totient is φ = 64638000.

The previous prime is 161801447. The next prime is 161801477. The reversal of 161801450 is 54108161.

161801450 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51011 + ... + 54089.

It is an arithmetic number, because the mean of its divisors is an integer number (12555620).

Almost surely, 2^161801450 is an apocalyptic number.

161801450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161801450 is a deficient number, since it is larger than the sum of its proper divisors (139533430).

161801450 is a wasteful number, since it uses less digits than its factorization.

161801450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4142 (or 4137 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 161801450 is about 12720.1198893721. The cubic root of 161801450 is about 544.9133773616.

The spelling of 161801450 in words is "one hundred sixty-one million, eight hundred one thousand, four hundred fifty".