918886401 has 12 divisors (see below), whose sum is σ = 1328221440. Its totient is φ = 612156600.

The previous prime is 918886399. The next prime is 918886403. The reversal of 918886401 is 104688819.

918886401 is a `hidden beast` number, since 91 + 88 + 86 + 401 = 666.

It is an interprime number because it is at equal distance from previous prime (918886399) and next prime (918886403).

It is not a de Polignac number, because 918886401 - 2¹ = 918886399 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (918886403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22525 + ... + 48426.

It is an arithmetic number, because the mean of its divisors is an integer number (110685120).

Almost surely, 2^918886401 is an apocalyptic number.

It is an amenable number.

918886401 is a deficient number, since it is larger than the sum of its proper divisors (409335039).

918886401 is a wasteful number, since it uses less digits than its factorization.

918886401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72396 (or 72393 counting only the distinct ones).

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

The square root of 918886401 is about 30313.1390819229. The cubic root of 918886401 is about 972.1962496845.

It can be divided in two parts, 91888 and 6401, that added together give a palindrome (98289).

The spelling of 918886401 in words is "nine hundred eighteen million, eight hundred eighty-six thousand, four hundred one".