918378201 has 16 divisors (see below), whose sum is σ = 1376032896. Its totient is φ = 540583296.

The previous prime is 918378169. The next prime is 918378203. The reversal of 918378201 is 102873819.

It is not a de Polignac number, because 918378201 - 2⁵ = 918378169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 918378201.

It is not an unprimeable number, because it can be changed into a prime (918378203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511020 + ... + 512813.

It is an arithmetic number, because the mean of its divisors is an integer number (86002056).

Almost surely, 2^918378201 is an apocalyptic number.

It is an amenable number.

918378201 is a deficient number, since it is larger than the sum of its proper divisors (457654695).

918378201 is a wasteful number, since it uses less digits than its factorization.

918378201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023872.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 918378201 is about 30304.7554189107. The cubic root of 918378201 is about 972.0169887715.

The spelling of 918378201 in words is "nine hundred eighteen million, three hundred seventy-eight thousand, two hundred one".