1985019150 has 48 divisors (see below), whose sum is σ = 5027606784. Its totient is φ = 518074080.

The previous prime is 1985019137. The next prime is 1985019181. The reversal of 1985019150 is 519105891.

It is a junction number, because it is equal to n+sod(n) for n = 1985019099 and 1985019108.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 133732 + ... + 147831.

It is an arithmetic number, because the mean of its divisors is an integer number (104741808).

Almost surely, 2^1985019150 is an apocalyptic number.

1985019150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1985019150 is an abundant number, since it is smaller than the sum of its proper divisors (3042587634).

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

1985019150 is a wasteful number, since it uses less digits than its factorization.

1985019150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281625 (or 281620 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 39.

The square root of 1985019150 is about 44553.5537303143. The cubic root of 1985019150 is about 1256.7673812559.

The spelling of 1985019150 in words is "one billion, nine hundred eighty-five million, nineteen thousand, one hundred fifty".