1923829640 has 32 divisors (see below), whose sum is σ = 4330212480. Its totient is φ = 769248192.

The previous prime is 1923829631. The next prime is 1923829643. The reversal of 1923829640 is 469283291.

It is a super-2 number, since 2×1923829640² = 7402240967485059200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1923829591 and 1923829600.

It is not an unprimeable number, because it can be changed into a prime (1923829643) 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, 126527 + ... + 140913.

It is an arithmetic number, because the mean of its divisors is an integer number (135319140).

Almost surely, 2^1923829640 is an apocalyptic number.

1923829640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1923829640 is an abundant number, since it is smaller than the sum of its proper divisors (2406382840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1923829640 is a wasteful number, since it uses less digits than its factorization.

1923829640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17741 (or 17737 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1923829640 is about 43861.4824190884. The cubic root of 1923829640 is about 1243.7188134230.

The spelling of 1923829640 in words is "one billion, nine hundred twenty-three million, eight hundred twenty-nine thousand, six hundred forty".