1822942091 has 4 divisors (see below), whose sum is σ = 1825986000. Its totient is φ = 1819898184.

The previous prime is 1822942063. The next prime is 1822942153. The reversal of 1822942091 is 1902492281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1822942091 - 2¹⁴ = 1822925707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822942591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521056 + ... + 1522253.

It is an arithmetic number, because the mean of its divisors is an integer number (456496500).

Almost surely, 2^1822942091 is an apocalyptic number.

1822942091 is a deficient number, since it is larger than the sum of its proper divisors (3043909).

1822942091 is an equidigital number, since it uses as much as digits as its factorization.

1822942091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043908.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1822942091 is about 42695.9259297652. The cubic root of 1822942091 is about 1221.5866865278.

The spelling of 1822942091 in words is "one billion, eight hundred twenty-two million, nine hundred forty-two thousand, ninety-one".