1682185989 has 16 divisors (see below), whose sum is σ = 2590747200. Its totient is φ = 959535360.

The previous prime is 1682185961. The next prime is 1682186003. The reversal of 1682185989 is 9895812861.

It is not a de Polignac number, because 1682185989 - 2⁸ = 1682185733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682185949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1498714 + ... + 1499835.

It is an arithmetic number, because the mean of its divisors is an integer number (161921700).

Almost surely, 2^1682185989 is an apocalyptic number.

It is an amenable number.

1682185989 is a deficient number, since it is larger than the sum of its proper divisors (908561211).

1682185989 is a wasteful number, since it uses less digits than its factorization.

1682185989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998580.

The product of its digits is 2488320, while the sum is 57.

The square root of 1682185989 is about 41014.4607303327. The cubic root of 1682185989 is about 1189.2997761279.

The spelling of 1682185989 in words is "one billion, six hundred eighty-two million, one hundred eighty-five thousand, nine hundred eighty-nine".