1922689454 has 12 divisors (see below), whose sum is σ = 3296320344. Its totient is φ = 823939452.

The previous prime is 1922689453. The next prime is 1922689459. The reversal of 1922689454 is 4549862291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922689453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158207 + ... + 169925.

It is an arithmetic number, because the mean of its divisors is an integer number (274693362).

Almost surely, 2^1922689454 is an apocalyptic number.

1922689454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1922689454 is a deficient number, since it is larger than the sum of its proper divisors (1373630890).

1922689454 is an frugal number, since it uses more digits than its factorization.

1922689454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23447 (or 11728 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 1922689454 is about 43848.4829156038. The cubic root of 1922689454 is about 1243.4730621034.

The spelling of 1922689454 in words is "one billion, nine hundred twenty-two million, six hundred eighty-nine thousand, four hundred fifty-four".