1896985775 has 6 divisors (see below), whose sum is σ = 2352262392. Its totient is φ = 1517588600.

The previous prime is 1896985771. The next prime is 1896985777. The reversal of 1896985775 is 5775896981.

It is not a de Polignac number, because 1896985775 - 2² = 1896985771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896985771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37939691 + ... + 37939740.

It is an arithmetic number, because the mean of its divisors is an integer number (392043732).

Almost surely, 2^1896985775 is an apocalyptic number.

1896985775 is a deficient number, since it is larger than the sum of its proper divisors (455276617).

1896985775 is an equidigital number, since it uses as much as digits as its factorization.

1896985775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75879441 (or 75879436 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 65.

The square root of 1896985775 is about 43554.4001795456. The cubic root of 1896985775 is about 1237.9070170873.

The spelling of 1896985775 in words is "one billion, eight hundred ninety-six million, nine hundred eighty-five thousand, seven hundred seventy-five".