15800949850 has 48 divisors (see below), whose sum is σ = 34369460928. Its totient is φ = 5291475840.

The previous prime is 15800949847. The next prime is 15800949859. The reversal of 15800949850 is 5894900851.

It is a junction number, because it is equal to n+sod(n) for n = 15800949794 and 15800949803.

It is not an unprimeable number, because it can be changed into a prime (15800949859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509899 + ... + 539998.

It is an arithmetic number, because the mean of its divisors is an integer number (716030436).

Almost surely, 2^15800949850 is an apocalyptic number.

15800949850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15800949850 is an abundant number, since it is smaller than the sum of its proper divisors (18568511078).

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

15800949850 is a wasteful number, since it uses less digits than its factorization.

15800949850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049959 (or 1049954 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

The spelling of 15800949850 in words is "fifteen billion, eight hundred million, nine hundred forty-nine thousand, eight hundred fifty".