1922138658 has 48 divisors (see below), whose sum is σ = 4740780096. Its totient is φ = 557140320.

The previous prime is 1922138627. The next prime is 1922138707. The reversal of 1922138658 is 8568312291.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206485 + ... + 215592.

It is an arithmetic number, because the mean of its divisors is an integer number (98766252).

Almost surely, 2^1922138658 is an apocalyptic number.

1922138658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1922138658 is an abundant number, since it is smaller than the sum of its proper divisors (2818641438).

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

1922138658 is a wasteful number, since it uses less digits than its factorization.

1922138658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422119 (or 422116 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1922138658 is about 43842.2017923370. The cubic root of 1922138658 is about 1243.3543108409.

The spelling of 1922138658 in words is "one billion, nine hundred twenty-two million, one hundred thirty-eight thousand, six hundred fifty-eight".