1985357 has 8 divisors (see below), whose sum is σ = 2188512. Its totient is φ = 1786000.

The previous prime is 1985317. The next prime is 1985363. The reversal of 1985357 is 7535891.

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 1985357 - 2⁶ = 1985293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1985357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218 + ... + 2004.

It is an arithmetic number, because the mean of its divisors is an integer number (273564).

2^1985357 is an apocalyptic number.

It is an amenable number.

1985357 is a deficient number, since it is larger than the sum of its proper divisors (203155).

1985357 is a wasteful number, since it uses less digits than its factorization.

1985357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899.

The product of its digits is 37800, while the sum is 38.

The square root of 1985357 is about 1409.0269692238. The cubic root of 1985357 is about 125.6838677759.

It can be divided in two parts, 1985 and 357, that multiplied together give a triangular number (708645 = T₁₁₉₀).

The spelling of 1985357 in words is "one million, nine hundred eighty-five thousand, three hundred fifty-seven".