1923913444 has 24 divisors (see below), whose sum is σ = 3477600000. Its totient is φ = 930351840.

The previous prime is 1923913441. The next prime is 1923913469. The reversal of 1923913444 is 4443193291.

It is a super-2 number, since 2×1923913444² = 7402885880007882272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1923913397 and 1923913406.

It is not an unprimeable number, because it can be changed into a prime (1923913441) 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, 252807 + ... + 260305.

It is an arithmetic number, because the mean of its divisors is an integer number (144900000).

Almost surely, 2^1923913444 is an apocalyptic number.

It is an amenable number.

1923913444 is a deficient number, since it is larger than the sum of its proper divisors (1553686556).

1923913444 is a wasteful number, since it uses less digits than its factorization.

1923913444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603 (or 9601 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 1923913444 is about 43862.4377343531. The cubic root of 1923913444 is about 1243.7368723849.

The spelling of 1923913444 in words is "one billion, nine hundred twenty-three million, nine hundred thirteen thousand, four hundred forty-four".