1800049950 has 72 divisors (see below), whose sum is σ = 4847877216. Its totient is φ = 478848000.

The previous prime is 1800049891. The next prime is 1800049957. The reversal of 1800049950 is 599400081.

1800049950 is a modest number, since divided by 49950 gives 1800 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800049957) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 189310 + ... + 198590.

It is an arithmetic number, because the mean of its divisors is an integer number (67331628).

Almost surely, 2^1800049950 is an apocalyptic number.

1800049950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1800049950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2423938608).

1800049950 is an abundant number, since it is smaller than the sum of its proper divisors (3047827266).

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

1800049950 is a wasteful number, since it uses less digits than its factorization.

1800049950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9730 (or 9722 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1800049950 is about 42426.9955335044. The cubic root of 1800049950 is about 1216.4516510843.

The spelling of 1800049950 in words is "one billion, eight hundred million, forty-nine thousand, nine hundred fifty".