918404013 has 8 divisors (see below), whose sum is σ = 1224773568. Its totient is φ = 612151904.

The previous prime is 918403979. The next prime is 918404027. The reversal of 918404013 is 310404819.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 918404013 - 2⁸ = 918403757 is a prime.

It is a super-3 number, since 3×918404013³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918404063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9120 + ... + 43817.

It is an arithmetic number, because the mean of its divisors is an integer number (153096696).

Almost surely, 2^918404013 is an apocalyptic number.

It is an amenable number.

918404013 is a deficient number, since it is larger than the sum of its proper divisors (306369555).

918404013 is a wasteful number, since it uses less digits than its factorization.

918404013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58723.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 918404013 is about 30305.1812896739. The cubic root of 918404013 is about 972.0260952113.

The spelling of 918404013 in words is "nine hundred eighteen million, four hundred four thousand, thirteen".