1800505150 has 12 divisors (see below), whose sum is σ = 3348939672. Its totient is φ = 720202040.

The previous prime is 1800505103. The next prime is 1800505153. The reversal of 1800505150 is 515050081.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800505153) 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 5 ways as a sum of consecutive naturals, for example, 18005002 + ... + 18005101.

It is an arithmetic number, because the mean of its divisors is an integer number (279078306).

Almost surely, 2^1800505150 is an apocalyptic number.

1800505150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1800505150 is a deficient number, since it is larger than the sum of its proper divisors (1548434522).

1800505150 is a wasteful number, since it uses less digits than its factorization.

1800505150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36010115 (or 36010110 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1800505150 is about 42432.3597034150. The cubic root of 1800505150 is about 1216.5541819654.

The spelling of 1800505150 in words is "one billion, eight hundred million, five hundred five thousand, one hundred fifty".