1985164 has 6 divisors (see below), whose sum is σ = 3474044. Its totient is φ = 992580.

The previous prime is 1985077. The next prime is 1985167. The reversal of 1985164 is 4615891.

It is a super-2 number, since 2×1985164² = 7881752213792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1985167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248142 + ... + 248149.

2^1985164 is an apocalyptic number.

It is an amenable number.

1985164 is a deficient number, since it is larger than the sum of its proper divisors (1488880).

1985164 is a wasteful number, since it uses less digits than its factorization.

1985164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496295 (or 496293 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 1985164 is about 1408.9584805806. The cubic root of 1985164 is about 125.6797949950.

The spelling of 1985164 in words is "one million, nine hundred eighty-five thousand, one hundred sixty-four".