1985105882 has 16 divisors (see below), whose sum is σ = 3025874880. Its totient is φ = 976518048.

The previous prime is 1985105869. The next prime is 1985105891. The reversal of 1985105882 is 2885015891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103598 + ... + 121254.

It is an arithmetic number, because the mean of its divisors is an integer number (189117180).

Almost surely, 2^1985105882 is an apocalyptic number.

1985105882 is a deficient number, since it is larger than the sum of its proper divisors (1040768998).

1985105882 is a wasteful number, since it uses less digits than its factorization.

1985105882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18565.

The product of its (nonzero) digits is 230400, while the sum is 47.

The square root of 1985105882 is about 44554.5270651592. The cubic root of 1985105882 is about 1256.7856850862.

The spelling of 1985105882 in words is "one billion, nine hundred eighty-five million, one hundred five thousand, eight hundred eighty-two".