1918091699496 has 96 divisors (see below), whose sum is σ = 5983698339840. Its totient is φ = 543711014784.

The previous prime is 1918091699429. The next prime is 1918091699497. The reversal of 1918091699496 is 6949961908191.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (1918091699497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14919211 + ... + 15047226.

It is an arithmetic number, because the mean of its divisors is an integer number (62330191040).

Almost surely, 2^{1918091699496} is an apocalyptic number.

It is an amenable number.

1918091699496 is an abundant number, since it is smaller than the sum of its proper divisors (4065606640344).

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

1918091699496 is a wasteful number, since it uses less digits than its factorization.

1918091699496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29966583 (or 29966576 counting only the distinct ones).

The product of its (nonzero) digits is 68024448, while the sum is 72.

The spelling of 1918091699496 in words is "one trillion, nine hundred eighteen billion, ninety-one million, six hundred ninety-nine thousand, four hundred ninety-six".