1823733640 has 16 divisors (see below), whose sum is σ = 4103400780. Its totient is φ = 729493440.

The previous prime is 1823733631. The next prime is 1823733697. The reversal of 1823733640 is 463373281.

It can be written as a sum of positive squares in 2 ways, for example, as 1616200804 + 207532836 = 40202^2 + 14406^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1823733640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22796631 + ... + 22796710.

Almost surely, 2^1823733640 is an apocalyptic number.

1823733640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1823733640 is an abundant number, since it is smaller than the sum of its proper divisors (2279667140).

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

1823733640 is a wasteful number, since it uses less digits than its factorization.

1823733640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45593352 (or 45593348 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 1823733640 is about 42705.1945318131. The cubic root of 1823733640 is about 1221.7634714084.

The spelling of 1823733640 in words is "one billion, eight hundred twenty-three million, seven hundred thirty-three thousand, six hundred forty".