1922085921 has 8 divisors (see below), whose sum is σ = 2928892864. Its totient is φ = 1098334800.

The previous prime is 1922085859. The next prime is 1922085929. The reversal of 1922085921 is 1295802291.

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

It is not a de Polignac number, because 1922085921 - 2¹⁴ = 1922069537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1922085921.

It is not an unprimeable number, because it can be changed into a prime (1922085929) 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, 45763930 + ... + 45763971.

It is an arithmetic number, because the mean of its divisors is an integer number (366111608).

Almost surely, 2^1922085921 is an apocalyptic number.

It is an amenable number.

1922085921 is a deficient number, since it is larger than the sum of its proper divisors (1006806943).

1922085921 is an equidigital number, since it uses as much as digits as its factorization.

1922085921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91527911.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1922085921 is about 43841.6003471589. The cubic root of 1922085921 is about 1243.3429395877.

The spelling of 1922085921 in words is "one billion, nine hundred twenty-two million, eighty-five thousand, nine hundred twenty-one".