1834206985 has 16 divisors (see below), whose sum is σ = 2376746064. Its totient is φ = 1350842112.

The previous prime is 1834206949. The next prime is 1834206991. The reversal of 1834206985 is 5896024381.

It can be written as a sum of positive squares in 8 ways, for example, as 84290761 + 1749916224 = 9181^2 + 41832^2 .

It is a cyclic number.

It is not a de Polignac number, because 1834206985 - 2¹¹ = 1834204937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13582 + ... + 62071.

It is an arithmetic number, because the mean of its divisors is an integer number (148546629).

Almost surely, 2^1834206985 is an apocalyptic number.

It is an amenable number.

1834206985 is a deficient number, since it is larger than the sum of its proper divisors (542539079).

1834206985 is a wasteful number, since it uses less digits than its factorization.

1834206985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76044.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 1834206985 is about 42827.6427672596. The cubic root of 1834206985 is about 1224.0977913327.

The spelling of 1834206985 in words is "one billion, eight hundred thirty-four million, two hundred six thousand, nine hundred eighty-five".