618967690 has 16 divisors (see below), whose sum is σ = 1215427680. Its totient is φ = 225079120.

The previous prime is 618967681. The next prime is 618967703. The reversal of 618967690 is 96769816.

It is a super-2 number, since 2×618967690² = 766242002527872200, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2813380 + ... + 2813599.

It is an arithmetic number, because the mean of its divisors is an integer number (75964230).

Almost surely, 2^618967690 is an apocalyptic number.

618967690 is a deficient number, since it is larger than the sum of its proper divisors (596459990).

618967690 is a wasteful number, since it uses less digits than its factorization.

618967690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626997.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 618967690 is about 24879.0612765032. The cubic root of 618967690 is about 852.2283812883.

The spelling of 618967690 in words is "six hundred eighteen million, nine hundred sixty-seven thousand, six hundred ninety".