1918075858944 has 416 divisors, whose sum is σ = 5910025887744. Its totient is φ = 541953884160.

The previous prime is 1918075858931. The next prime is 1918075858957. The reversal of 1918075858944 is 4498585708191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1918075858931) and next prime (1918075858957).

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 31 ways as a sum of consecutive naturals, for example, 5142294342 + ... + 5142294714.

Almost surely, 2^{1918075858944} is an apocalyptic number.

1918075858944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1918075858944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2955012943872).

1918075858944 is an abundant number, since it is smaller than the sum of its proper divisors (3991950028800).

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

1918075858944 is a wasteful number, since it uses less digits than its factorization.

1918075858944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 69.

The spelling of 1918075858944 in words is "one trillion, nine hundred eighteen billion, seventy-five million, eight hundred fifty-eight thousand, nine hundred forty-four".