618590490 has 32 divisors (see below), whose sum is σ = 1696705920. Its totient is φ = 141392064.

The previous prime is 618590477. The next prime is 618590491. The reversal of 618590490 is 94095816.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (618590491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1472625 + ... + 1473044.

It is an arithmetic number, because the mean of its divisors is an integer number (53022060).

Almost surely, 2^618590490 is an apocalyptic number.

618590490 is an abundant number, since it is smaller than the sum of its proper divisors (1078115430).

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

618590490 is a wasteful number, since it uses less digits than its factorization.

618590490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945686.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 618590490 is about 24871.4794493613. The cubic root of 618590490 is about 852.0552296186.

The spelling of 618590490 in words is "six hundred eighteen million, five hundred ninety thousand, four hundred ninety".