1823544140 has 48 divisors (see below), whose sum is σ = 4224558240. Its totient is φ = 655649280.

The previous prime is 1823544137. The next prime is 1823544169. The reversal of 1823544140 is 414453281.

It is a junction number, because it is equal to n+sod(n) for n = 1823544097 and 1823544106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26987 + ... + 66146.

It is an arithmetic number, because the mean of its divisors is an integer number (88011630).

Almost surely, 2^1823544140 is an apocalyptic number.

1823544140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1823544140 is an abundant number, since it is smaller than the sum of its proper divisors (2401014100).

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

1823544140 is a wasteful number, since it uses less digits than its factorization.

1823544140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93242 (or 93240 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 1823544140 is about 42702.9757745289. The cubic root of 1823544140 is about 1221.7211530581.

The spelling of 1823544140 in words is "one billion, eight hundred twenty-three million, five hundred forty-four thousand, one hundred forty".