1916197756512 has 48 divisors (see below), whose sum is σ = 5416943661360. Its totient is φ = 589599309312.

The previous prime is 1916197756463. The next prime is 1916197756537. The reversal of 1916197756512 is 2156577916191.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1916197756512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767706187 + ... + 767708682.

It is an arithmetic number, because the mean of its divisors is an integer number (112852992945).

Almost surely, 2^{1916197756512} is an apocalyptic number.

1916197756512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1916197756512 is an abundant number, since it is smaller than the sum of its proper divisors (3500745904848).

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

1916197756512 is a wasteful number, since it uses less digits than its factorization.

1916197756512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535414895 (or 1535414887 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 60.

The spelling of 1916197756512 in words is "one trillion, nine hundred sixteen billion, one hundred ninety-seven million, seven hundred fifty-six thousand, five hundred twelve".