918018420 has 48 divisors (see below), whose sum is σ = 2804131008. Its totient is φ = 222549760.

The previous prime is 918018397. The next prime is 918018449. The reversal of 918018420 is 24810819.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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, 694809 + ... + 696128.

It is an arithmetic number, because the mean of its divisors is an integer number (58419396).

Almost surely, 2^918018420 is an apocalyptic number.

It is an amenable number.

918018420 is an abundant number, since it is smaller than the sum of its proper divisors (1886112588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918018420 is a wasteful number, since it uses less digits than its factorization.

918018420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390960 (or 1390958 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 918018420 is about 30298.8187888571. The cubic root of 918018420 is about 971.8900407373.

The spelling of 918018420 in words is "nine hundred eighteen million, eighteen thousand, four hundred twenty".