1985683087 has 8 divisors (see below), whose sum is σ = 2022614576. Its totient is φ = 1948966272.

The previous prime is 1985683043. The next prime is 1985683097. The reversal of 1985683087 is 7803865891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1985683087 - 2¹⁵ = 1985650319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985683097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34938 + ... + 72055.

It is an arithmetic number, because the mean of its divisors is an integer number (252826822).

Almost surely, 2^1985683087 is an apocalyptic number.

1985683087 is a deficient number, since it is larger than the sum of its proper divisors (36931489).

1985683087 is a wasteful number, since it uses less digits than its factorization.

1985683087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107337.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1985683087 is about 44561.0041067299. The cubic root of 1985683087 is about 1256.9074842456.

The spelling of 1985683087 in words is "one billion, nine hundred eighty-five million, six hundred eighty-three thousand, eighty-seven".