1916135105597 has 16 divisors (see below), whose sum is σ = 2037469457520. Its totient is φ = 1795763601408.

The previous prime is 1916135105587. The next prime is 1916135105671. The reversal of 1916135105597 is 7955015316191.

It can be written as a sum of positive squares in 8 ways, for example, as 457610307961 + 1458524797636 = 676469^2 + 1207694^2 .

It is not a de Polignac number, because 1916135105597 - 2²⁰ = 1916134057021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916135105537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12405479 + ... + 12558987.

It is an arithmetic number, because the mean of its divisors is an integer number (127341841095).

Almost surely, 2^{1916135105597} is an apocalyptic number.

1916135105597 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1916135105597 is a deficient number, since it is larger than the sum of its proper divisors (121334351923).

1916135105597 is a wasteful number, since it uses less digits than its factorization.

1916135105597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156640.

The product of its (nonzero) digits is 1275750, while the sum is 53.

The spelling of 1916135105597 in words is "one trillion, nine hundred sixteen billion, one hundred thirty-five million, one hundred five thousand, five hundred ninety-seven".