1918549458192 has 40 divisors (see below), whose sum is σ = 4956702788416. Its totient is φ = 639458418816.

The previous prime is 1918549458181. The next prime is 1918549458197. The reversal of 1918549458192 is 2918549458191.

It is not an unprimeable number, because it can be changed into a prime (1918549458197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278823 + ... + 2339334.

Almost surely, 2^{1918549458192} is an apocalyptic number.

1918549458192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1918549458192 is an abundant number, since it is smaller than the sum of its proper divisors (3038153330224).

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

1918549458192 is a wasteful number, since it uses less digits than its factorization.

1918549458192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629215 (or 3629209 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 66.

Subtracting 1918549458192 from its reverse (2918549458191), we obtain a palindrome (999999999999).

The spelling of 1918549458192 in words is "one trillion, nine hundred eighteen billion, five hundred forty-nine million, four hundred fifty-eight thousand, one hundred ninety-two".