464554491990 has 16 divisors (see below), whose sum is σ = 1114930780848. Its totient is φ = 123881197856.

The previous prime is 464554491983. The next prime is 464554492057. The reversal of 464554491990 is 99194455464.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7742574837 + ... + 7742574896.

It is an arithmetic number, because the mean of its divisors is an integer number (69683173803).

Almost surely, 2^464554491990 is an apocalyptic number.

464554491990 is an abundant number, since it is smaller than the sum of its proper divisors (650376288858).

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

464554491990 is a wasteful number, since it uses less digits than its factorization.

464554491990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15485149743.

The product of its (nonzero) digits is 27993600, while the sum is 60.

The spelling of 464554491990 in words is "four hundred sixty-four billion, five hundred fifty-four million, four hundred ninety-one thousand, nine hundred ninety".