1985313722 has 16 divisors (see below), whose sum is σ = 3413155200. Its totient is φ = 848408688.

The previous prime is 1985313721. The next prime is 1985313731. The reversal of 1985313722 is 2273135891.

It is a super-2 number, since 2×1985313722² = 7882941149522986568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1985313722.

It is not an unprimeable number, because it can be changed into a prime (1985313721) 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, 198278 + ... + 208049.

It is an arithmetic number, because the mean of its divisors is an integer number (213322200).

Almost surely, 2^1985313722 is an apocalyptic number.

1985313722 is a deficient number, since it is larger than the sum of its proper divisors (1427841478).

1985313722 is a wasteful number, since it uses less digits than its factorization.

1985313722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406685.

The product of its digits is 90720, while the sum is 41.

The square root of 1985313722 is about 44556.8594270287. The cubic root of 1985313722 is about 1256.8295452523.

The spelling of 1985313722 in words is "one billion, nine hundred eighty-five million, three hundred thirteen thousand, seven hundred twenty-two".