450165090 has 16 divisors (see below), whose sum is σ = 1080396288. Its totient is φ = 120044016.

The previous prime is 450165073. The next prime is 450165097. The reversal of 450165090 is 90561054.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 15005503 = 450165090 / (4 + 5 + 0 + 1 + 6 + 5 + 0 + 9 + 0).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (450165097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7502722 + ... + 7502781.

It is an arithmetic number, because the mean of its divisors is an integer number (67524768).

Almost surely, 2^450165090 is an apocalyptic number.

450165090 is an abundant number, since it is smaller than the sum of its proper divisors (630231198).

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

450165090 is a wasteful number, since it uses less digits than its factorization.

450165090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005513.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 450165090 is about 21217.0942873901. The cubic root of 450165090 is about 766.4031320651.

The spelling of 450165090 in words is "four hundred fifty million, one hundred sixty-five thousand, ninety".