1985239116 has 54 divisors (see below), whose sum is σ = 5837553540. Its totient is φ = 567210672.

The previous prime is 1985239079. The next prime is 1985239117. The reversal of 1985239116 is 6119325891.

1985239116 is a `hidden beast` number, since 1 + 9 + 8 + 523 + 9 + 116 = 666.

It is a super-2 number, since 2×1985239116² = 7882348695392922912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1985239117) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 560946 + ... + 564473.

Almost surely, 2^1985239116 is an apocalyptic number.

It is an amenable number.

1985239116 is an abundant number, since it is smaller than the sum of its proper divisors (3852314424).

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

1985239116 is a wasteful number, since it uses less digits than its factorization.

1985239116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125443 (or 1125431 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1985239116 is about 44556.0222192242. The cubic root of 1985239116 is about 1256.8138016113.

The spelling of 1985239116 in words is "one billion, nine hundred eighty-five million, two hundred thirty-nine thousand, one hundred sixteen".