1994109245136 has 100 divisors (see below), whose sum is σ = 5841067522752. Its totient is φ = 656694575424.

The previous prime is 1994109245119. The next prime is 1994109245159. The reversal of 1994109245136 is 6315429014991.

1994109245136 is a `hidden beast` number, since 1 + 9 + 9 + 410 + 92 + 4 + 5 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9161496 + ... + 9376631.

Almost surely, 2^{1994109245136} is an apocalyptic number.

1994109245136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1994109245136 is an abundant number, since it is smaller than the sum of its proper divisors (3846958277616).

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

1994109245136 is a wasteful number, since it uses less digits than its factorization.

1994109245136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18538230 (or 18538215 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 1994109245136 in words is "one trillion, nine hundred ninety-four billion, one hundred nine million, two hundred forty-five thousand, one hundred thirty-six".