1985379 has 16 divisors (see below), whose sum is σ = 3058560. Its totient is φ = 1132160.

The previous prime is 1985377. The next prime is 1985407. The reversal of 1985379 is 9735891.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1985379 - 2¹ = 1985377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1985379.

It is not an unprimeable number, because it can be changed into a prime (1985377) 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, 1209 + ... + 2330.

It is an arithmetic number, because the mean of its divisors is an integer number (191160).

2^1985379 is an apocalyptic number.

1985379 is a deficient number, since it is larger than the sum of its proper divisors (1073181).

1985379 is a wasteful number, since it uses less digits than its factorization.

1985379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its digits is 68040, while the sum is 42.

The square root of 1985379 is about 1409.0347760080. The cubic root of 1985379 is about 125.6843320140.

The spelling of 1985379 in words is "one million, nine hundred eighty-five thousand, three hundred seventy-nine".