192987780813 has 24 divisors (see below), whose sum is σ = 283416715296. Its totient is φ = 126516060000.

The previous prime is 192987780803. The next prime is 192987780823. The reversal of 192987780813 is 318087789291.

It is an interprime number because it is at equal distance from previous prime (192987780803) and next prime (192987780823).

It is not a de Polignac number, because 192987780813 - 2¹² = 192987776717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192987780803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64063 + ... + 624563.

It is an arithmetic number, because the mean of its divisors is an integer number (11809029804).

Almost surely, 2^192987780813 is an apocalyptic number.

It is an amenable number.

192987780813 is a deficient number, since it is larger than the sum of its proper divisors (90428934483).

192987780813 is a wasteful number, since it uses less digits than its factorization.

192987780813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561145 (or 561142 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The spelling of 192987780813 in words is "one hundred ninety-two billion, nine hundred eighty-seven million, seven hundred eighty thousand, eight hundred thirteen".