1868642052 has 24 divisors (see below), whose sum is σ = 4391536800. Its totient is φ = 618398976.

The previous prime is 1868642003. The next prime is 1868642053. The reversal of 1868642052 is 2502468681.

It is a junction number, because it is equal to n+sod(n) for n = 1868641995 and 1868642013.

It is not an unprimeable number, because it can be changed into a prime (1868642053) 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, 558477 + ... + 561812.

It is an arithmetic number, because the mean of its divisors is an integer number (182980700).

Almost surely, 2^1868642052 is an apocalyptic number.

1868642052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1868642052 is an abundant number, since it is smaller than the sum of its proper divisors (2522894748).

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

1868642052 is a wasteful number, since it uses less digits than its factorization.

1868642052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120435 (or 1120433 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 1868642052 is about 43227.7925876397. The cubic root of 1868642052 is about 1231.7106767407.

The spelling of 1868642052 in words is "one billion, eight hundred sixty-eight million, six hundred forty-two thousand, fifty-two".