1922243381 has 8 divisors (see below), whose sum is σ = 1984760064. Its totient is φ = 1859758560.

The previous prime is 1922243327. The next prime is 1922243383. The reversal of 1922243381 is 1833422291.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1922243381 is a prime.

It is a super-2 number, since 2×1922243381² = 7390039231596622322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922243383) 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, 208046 + ... + 217088.

It is an arithmetic number, because the mean of its divisors is an integer number (248095008).

Almost surely, 2^1922243381 is an apocalyptic number.

It is an amenable number.

1922243381 is a deficient number, since it is larger than the sum of its proper divisors (62516683).

1922243381 is an equidigital number, since it uses as much as digits as its factorization.

1922243381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15931.

The product of its digits is 20736, while the sum is 35.

The square root of 1922243381 is about 43843.3960933685. The cubic root of 1922243381 is about 1243.3768907986.

The spelling of 1922243381 in words is "one billion, nine hundred twenty-two million, two hundred forty-three thousand, three hundred eighty-one".