1985790368 has 24 divisors (see below), whose sum is σ = 3912354432. Its totient is φ = 992176576.

The previous prime is 1985790337. The next prime is 1985790371. The reversal of 1985790368 is 8630975891.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23921 + ... + 67407.

It is an arithmetic number, because the mean of its divisors is an integer number (163014768).

Almost surely, 2^1985790368 is an apocalyptic number.

It is an amenable number.

1985790368 is a deficient number, since it is larger than the sum of its proper divisors (1926564064).

1985790368 is a wasteful number, since it uses less digits than its factorization.

1985790368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44924 (or 44916 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 1985790368 is about 44562.2078447646. The cubic root of 1985790368 is about 1256.9301195903.

The spelling of 1985790368 in words is "one billion, nine hundred eighty-five million, seven hundred ninety thousand, three hundred sixty-eight".