1823920452 has 18 divisors (see below), whose sum is σ = 4610465678. Its totient is φ = 607973472.

The previous prime is 1823920421. The next prime is 1823920453. The reversal of 1823920452 is 2540293281.

It is a happy number.

1823920452 is a `hidden beast` number, since 182 + 3 + 9 + 20 + 452 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1672482816 + 151437636 = 40896^2 + 12306^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 50664457 = 1823920452 / (1 + 8 + 2 + 3 + 9 + 2 + 0 + 4 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (1823920453) 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, 25332193 + ... + 25332264.

Almost surely, 2^1823920452 is an apocalyptic number.

1823920452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1823920452 is an abundant number, since it is smaller than the sum of its proper divisors (2786545226).

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

1823920452 is a wasteful number, since it uses less digits than its factorization.

1823920452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50664467 (or 50664462 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1823920452 is about 42707.3817038694. The cubic root of 1823920452 is about 1221.8051866165.

The spelling of 1823920452 in words is "one billion, eight hundred twenty-three million, nine hundred twenty thousand, four hundred fifty-two".