618904001 has 4 divisors (see below), whose sum is σ = 627382212. Its totient is φ = 610425792.

The previous prime is 618903973. The next prime is 618904007. The reversal of 618904001 is 100409816.

618904001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196560400 + 422343601 = 14020^2 + 20551^2 .

It is a cyclic number.

It is not a de Polignac number, because 618904001 - 2¹⁸ = 618641857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618904007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4238996 + ... + 4239141.

It is an arithmetic number, because the mean of its divisors is an integer number (156845553).

Almost surely, 2^618904001 is an apocalyptic number.

It is an amenable number.

618904001 is a deficient number, since it is larger than the sum of its proper divisors (8478211).

618904001 is an equidigital number, since it uses as much as digits as its factorization.

618904001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478210.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 618904001 is about 24877.7812716488. The cubic root of 618904001 is about 852.1991501260.

The spelling of 618904001 in words is "six hundred eighteen million, nine hundred four thousand, one".