918251401 has 2 divisors, whose sum is σ = 918251402. Its totient is φ = 918251400.

The previous prime is 918251393. The next prime is 918251417. The reversal of 918251401 is 104152819.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701455225 + 216796176 = 26485^2 + 14724^2 .

It is a cyclic number.

It is not a de Polignac number, because 918251401 - 2³ = 918251393 is a prime.

It is a super-3 number, since 3×918251401³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (918251461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459125700 + 459125701.

It is an arithmetic number, because the mean of its divisors is an integer number (459125701).

Almost surely, 2^918251401 is an apocalyptic number.

It is an amenable number.

918251401 is a deficient number, since it is larger than the sum of its proper divisors (1).

918251401 is an equidigital number, since it uses as much as digits as its factorization.

918251401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 918251401 is about 30302.6632657923. The cubic root of 918251401 is about 971.9722514193.

The spelling of 918251401 in words is "nine hundred eighteen million, two hundred fifty-one thousand, four hundred one".