451465890 has 16 divisors (see below), whose sum is σ = 1083518208. Its totient is φ = 120390896.

The previous prime is 451465877. The next prime is 451465891. The reversal of 451465890 is 98564154.

It is not an unprimeable number, because it can be changed into a prime (451465891) 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, 7524402 + ... + 7524461.

It is an arithmetic number, because the mean of its divisors is an integer number (67719888).

Almost surely, 2^451465890 is an apocalyptic number.

451465890 is an abundant number, since it is smaller than the sum of its proper divisors (632052318).

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

451465890 is a wasteful number, since it uses less digits than its factorization.

451465890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15048873.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 451465890 is about 21247.7267019321. The cubic root of 451465890 is about 767.1406233417.

The spelling of 451465890 in words is "four hundred fifty-one million, four hundred sixty-five thousand, eight hundred ninety".