1923664839652 has 12 divisors (see below), whose sum is σ = 3512779272576. Its totient is φ = 920013618920.

The previous prime is 1923664839647. The next prime is 1923664839653. The reversal of 1923664839652 is 2569384663291.

It is a super-2 number, since 2×1923664839652² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1923664839653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10454700124 + ... + 10454700307.

It is an arithmetic number, because the mean of its divisors is an integer number (292731606048).

Almost surely, 2^{1923664839652} is an apocalyptic number.

It is an amenable number.

1923664839652 is a deficient number, since it is larger than the sum of its proper divisors (1589114432924).

1923664839652 is a wasteful number, since it uses less digits than its factorization.

1923664839652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20909400458 (or 20909400456 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 64.

The spelling of 1923664839652 in words is "one trillion, nine hundred twenty-three billion, six hundred sixty-four million, eight hundred thirty-nine thousand, six hundred fifty-two".