1868993252 has 12 divisors (see below), whose sum is σ = 3737986560. Its totient is φ = 800997096.

The previous prime is 1868993251. The next prime is 1868993261. The reversal of 1868993252 is 2523998681.

1868993252 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1868993194 and 1868993203.

It is not an unprimeable number, because it can be changed into a prime (1868993251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33374852 + ... + 33374907.

It is an arithmetic number, because the mean of its divisors is an integer number (311498880).

Almost surely, 2^1868993252 is an apocalyptic number.

It is an amenable number.

1868993252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1868993252 is a wasteful number, since it uses less digits than its factorization.

1868993252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66749770 (or 66749768 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 1868993252 is about 43231.8545982011. The cubic root of 1868993252 is about 1231.7878361039.

The spelling of 1868993252 in words is "one billion, eight hundred sixty-eight million, nine hundred ninety-three thousand, two hundred fifty-two".