1918181837292 has 72 divisors (see below), whose sum is σ = 5228278433280. Its totient is φ = 545758809120.

The previous prime is 1918181837269. The next prime is 1918181837309. The reversal of 1918181837292 is 2927381818191.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6684184 + ... + 6965247.

It is an arithmetic number, because the mean of its divisors is an integer number (72614978240).

Almost surely, 2^{1918181837292} is an apocalyptic number.

1918181837292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1918181837292 is an abundant number, since it is smaller than the sum of its proper divisors (3310096595988).

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

1918181837292 is a wasteful number, since it uses less digits than its factorization.

1918181837292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13649691 (or 13649682 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 60.

The spelling of 1918181837292 in words is "one trillion, nine hundred eighteen billion, one hundred eighty-one million, eight hundred thirty-seven thousand, two hundred ninety-two".