1868507850 has 48 divisors (see below), whose sum is σ = 5055167520. Its totient is φ = 452971200.

The previous prime is 1868507843. The next prime is 1868507863. The reversal of 1868507850 is 587058681.

It is a self number, because there is not a number n which added to its sum of digits gives 1868507850.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564565 + ... + 567864.

It is an arithmetic number, because the mean of its divisors is an integer number (105315990).

Almost surely, 2^1868507850 is an apocalyptic number.

1868507850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868507850 is an abundant number, since it is smaller than the sum of its proper divisors (3186659670).

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

1868507850 is a wasteful number, since it uses less digits than its factorization.

1868507850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132455 (or 1132450 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The square root of 1868507850 is about 43226.2402945248. The cubic root of 1868507850 is about 1231.6811897319.

The spelling of 1868507850 in words is "one billion, eight hundred sixty-eight million, five hundred seven thousand, eight hundred fifty".