1985283156 has 24 divisors (see below), whose sum is σ = 4633048000. Its totient is φ = 661658112.

The previous prime is 1985283143. The next prime is 1985283161. The reversal of 1985283156 is 6513825891.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143220 + ... + 156468.

Almost surely, 2^1985283156 is an apocalyptic number.

It is an amenable number.

1985283156 is an abundant number, since it is smaller than the sum of its proper divisors (2647764844).

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

1985283156 is a wasteful number, since it uses less digits than its factorization.

1985283156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25743 (or 25741 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 1985283156 is about 44556.5164257710. The cubic root of 1985283156 is about 1256.8230951468.

The spelling of 1985283156 in words is "one billion, nine hundred eighty-five million, two hundred eighty-three thousand, one hundred fifty-six".