1912136204917 has 4 divisors (see below), whose sum is σ = 1916552224300. Its totient is φ = 1907720185536.

The previous prime is 1912136204873. The next prime is 1912136204941. The reversal of 1912136204917 is 7194026312191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 272811914596 + 1639324290321 = 522314^2 + 1280361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1912136204917 - 2³⁵ = 1877776466549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912136204977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208009042 + ... + 2208009907.

It is an arithmetic number, because the mean of its divisors is an integer number (479138056075).

Almost surely, 2^{1912136204917} is an apocalyptic number.

It is an amenable number.

1912136204917 is a deficient number, since it is larger than the sum of its proper divisors (4416019383).

1912136204917 is an equidigital number, since it uses as much as digits as its factorization.

1912136204917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416019382.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 1912136204917 in words is "one trillion, nine hundred twelve billion, one hundred thirty-six million, two hundred four thousand, nine hundred seventeen".