1985575045 has 16 divisors (see below), whose sum is σ = 2474271360. Its totient is φ = 1527824704.

The previous prime is 1985575021. The next prime is 1985575051. The reversal of 1985575045 is 5405755891.

It is a cyclic number.

It is not a de Polignac number, because 1985575045 - 2⁵ = 1985575013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1985575045.

It is a congruent 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, 12102 + ... + 64168.

It is an arithmetic number, because the mean of its divisors is an integer number (154641960).

Almost surely, 2^1985575045 is an apocalyptic number.

It is an amenable number.

1985575045 is a deficient number, since it is larger than the sum of its proper divisors (488696315).

1985575045 is a wasteful number, since it uses less digits than its factorization.

1985575045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52364.

The product of its (nonzero) digits is 1260000, while the sum is 49.

The square root of 1985575045 is about 44559.7917970899. The cubic root of 1985575045 is about 1256.8846875126.

The spelling of 1985575045 in words is "one billion, nine hundred eighty-five million, five hundred seventy-five thousand, forty-five".