1331992184956 has 48 divisors (see below), whose sum is σ = 2472883614432. Its totient is φ = 625606963200.

The previous prime is 1331992184923. The next prime is 1331992184959. The reversal of 1331992184956 is 6594812991331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1331992184894 and 1331992184903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331992184959) 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, 81156391 + ... + 81172801.

It is an arithmetic number, because the mean of its divisors is an integer number (51518408634).

Almost surely, 2^{1331992184956} is an apocalyptic number.

It is an amenable number.

1331992184956 is a deficient number, since it is larger than the sum of its proper divisors (1140891429476).

1331992184956 is a wasteful number, since it uses less digits than its factorization.

1331992184956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18670 (or 18668 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 61.

The spelling of 1331992184956 in words is "one trillion, three hundred thirty-one billion, nine hundred ninety-two million, one hundred eighty-four thousand, nine hundred fifty-six".