1942122791 has 24 divisors (see below), whose sum is σ = 2387871360. Its totient is φ = 1570590000.

The previous prime is 1942122781. The next prime is 1942122797. The reversal of 1942122791 is 1972212491.

It is not a de Polignac number, because 1942122791 - 2¹⁸ = 1941860647 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942122797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229526 + ... + 237836.

It is an arithmetic number, because the mean of its divisors is an integer number (99494640).

Almost surely, 2^1942122791 is an apocalyptic number.

1942122791 is a deficient number, since it is larger than the sum of its proper divisors (445748569).

1942122791 is a wasteful number, since it uses less digits than its factorization.

1942122791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595 (or 8588 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 1942122791 is about 44069.5222461056. The cubic root of 1942122791 is about 1247.6484409903.

The spelling of 1942122791 in words is "one billion, nine hundred forty-two million, one hundred twenty-two thousand, seven hundred ninety-one".