1916680458913 has 4 divisors (see below), whose sum is σ = 2090924137008. Its totient is φ = 1742436780820.

The previous prime is 1916680458851. The next prime is 1916680458971. The reversal of 1916680458913 is 3198540866191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1916680458913 is a prime.

It is a super-2 number, since 2×1916680458913² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1916680458983) 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, 87121839031 + ... + 87121839052.

It is an arithmetic number, because the mean of its divisors is an integer number (522731034252).

Almost surely, 2^{1916680458913} is an apocalyptic number.

It is an amenable number.

1916680458913 is a deficient number, since it is larger than the sum of its proper divisors (174243678095).

1916680458913 is a wasteful number, since it uses less digits than its factorization.

1916680458913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174243678094.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 1916680458913 in words is "one trillion, nine hundred sixteen billion, six hundred eighty million, four hundred fifty-eight thousand, nine hundred thirteen".