1922121375 has 32 divisors (see below), whose sum is σ = 3201429504. Its totient is φ = 1024164000.

The previous prime is 1922121349. The next prime is 1922121379. The reversal of 1922121375 is 5731212291.

It is not a de Polignac number, because 1922121375 - 2⁵ = 1922121343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922121379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585990 + ... + 589260.

It is an arithmetic number, because the mean of its divisors is an integer number (100044672).

Almost surely, 2^1922121375 is an apocalyptic number.

1922121375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1922121375 is a deficient number, since it is larger than the sum of its proper divisors (1279308129).

1922121375 is a wasteful number, since it uses less digits than its factorization.

1922121375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4856 (or 4846 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 1922121375 is about 43842.0046872859. The cubic root of 1922121375 is about 1243.3505842701.

The spelling of 1922121375 in words is "one billion, nine hundred twenty-two million, one hundred twenty-one thousand, three hundred seventy-five".