921840072092 has 12 divisors (see below), whose sum is σ = 1621666306176. Its totient is φ = 458506841760.

The previous prime is 921840072067. The next prime is 921840072103. The reversal of 921840072092 is 290270048129.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603297713 + ... + 603299240.

It is an arithmetic number, because the mean of its divisors is an integer number (135138858848).

Almost surely, 2^921840072092 is an apocalyptic number.

It is an amenable number.

921840072092 is a deficient number, since it is larger than the sum of its proper divisors (699826234084).

921840072092 is a wasteful number, since it uses less digits than its factorization.

921840072092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206597148 (or 1206597146 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 921840072092 in words is "nine hundred twenty-one billion, eight hundred forty million, seventy-two thousand, ninety-two".