1922144407 has 4 divisors (see below), whose sum is σ = 1922252200. Its totient is φ = 1922036616.

The previous prime is 1922144401. The next prime is 1922144437. The reversal of 1922144407 is 7044412291.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7044412291 = 7 ⋅1006344613.

It is a cyclic number.

It is not a de Polignac number, because 1922144407 - 2²³ = 1913755799 is a prime.

It is a super-2 number, since 2×1922144407² = 7389278242722763298, 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 (1922144401) 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, 20073 + ... + 65170.

It is an arithmetic number, because the mean of its divisors is an integer number (480563050).

Almost surely, 2^1922144407 is an apocalyptic number.

1922144407 is a deficient number, since it is larger than the sum of its proper divisors (107793).

1922144407 is an equidigital number, since it uses as much as digits as its factorization.

1922144407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107792.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1922144407 is about 43842.2673569696. The cubic root of 1922144407 is about 1243.3555504387.

Adding to 1922144407 its reverse (7044412291), we get a palindrome (8966556698).

The spelling of 1922144407 in words is "one billion, nine hundred twenty-two million, one hundred forty-four thousand, four hundred seven".