921619000090 has 8 divisors (see below), whose sum is σ = 1658914200180. Its totient is φ = 368647600032.

The previous prime is 921619000063. The next prime is 921619000157. The reversal of 921619000090 is 90000916129.

It can be written as a sum of positive squares in 2 ways, for example, as 912871326249 + 8747673841 = 955443^2 + 93529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 46080949995 + ... + 46080950014.

Almost surely, 2^921619000090 is an apocalyptic number.

921619000090 is a deficient number, since it is larger than the sum of its proper divisors (737295200090).

921619000090 is a wasteful number, since it uses less digits than its factorization.

921619000090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92161900016.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 921619000090 in words is "nine hundred twenty-one billion, six hundred nineteen million, ninety", and thus it is an aban number.