18419309692 has 24 divisors (see below), whose sum is σ = 37107522144. Its totient is φ = 7836367872.

The previous prime is 18419309659. The next prime is 18419309693. The reversal of 18419309692 is 29690391481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419309693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397013 + ... + 2404684.

It is an arithmetic number, because the mean of its divisors is an integer number (1546146756).

Almost surely, 2^18419309692 is an apocalyptic number.

It is an amenable number.

18419309692 is an abundant number, since it is smaller than the sum of its proper divisors (18688212452).

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

18419309692 is a wasteful number, since it uses less digits than its factorization.

18419309692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801845 (or 4801843 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 18419309692 in words is "eighteen billion, four hundred nineteen million, three hundred nine thousand, six hundred ninety-two".