4536493990 has 32 divisors (see below), whose sum is σ = 9522676800. Its totient is φ = 1555368192.

The previous prime is 4536493981. The next prime is 4536493991. The reversal of 4536493990 is 993946354.

It is a super-2 number, since 2×4536493990² = 41159555442612240200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4536493991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657867 + ... + 664726.

It is an arithmetic number, because the mean of its divisors is an integer number (297583650).

Almost surely, 2^4536493990 is an apocalyptic number.

4536493990 is an abundant number, since it is smaller than the sum of its proper divisors (4986182810).

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

4536493990 is a wasteful number, since it uses less digits than its factorization.

4536493990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322621 (or 1322607 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 52.

The square root of 4536493990 is about 67353.5002060027. The cubic root of 4536493990 is about 1655.4145954002.

The spelling of 4536493990 in words is "four billion, five hundred thirty-six million, four hundred ninety-three thousand, nine hundred ninety".