618898401 has 56 divisors (see below), whose sum is σ = 1022733216. Its totient is φ = 371226240.

The previous prime is 618898393. The next prime is 618898433. The reversal of 618898401 is 104898816.

618898401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 618898401 - 2³ = 618898393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618897401) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 905806 + ... + 906488.

Almost surely, 2^618898401 is an apocalyptic number.

It is an amenable number.

618898401 is a deficient number, since it is larger than the sum of its proper divisors (403834815).

618898401 is a wasteful number, since it uses less digits than its factorization.

618898401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 618898401 is about 24877.6687211644. The cubic root of 618898401 is about 852.1965798137.

The spelling of 618898401 in words is "six hundred eighteen million, eight hundred ninety-eight thousand, four hundred one".