1983312394 has 16 divisors (see below), whose sum is σ = 3402842688. Its totient is φ = 849271392.

The previous prime is 1983312377. The next prime is 1983312403. The reversal of 1983312394 is 4932133891.

It is a super-2 number, since 2×1983312394² = 7867056104388022472, 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 1983312394.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42672 + ... + 76075.

It is an arithmetic number, because the mean of its divisors is an integer number (212677668).

Almost surely, 2^1983312394 is an apocalyptic number.

1983312394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1983312394 is a deficient number, since it is larger than the sum of its proper divisors (1419530294).

1983312394 is a wasteful number, since it uses less digits than its factorization.

1983312394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119949.

The product of its digits is 139968, while the sum is 43.

The square root of 1983312394 is about 44534.3956285476. The cubic root of 1983312394 is about 1256.4070807300.

The spelling of 1983312394 in words is "one billion, nine hundred eighty-three million, three hundred twelve thousand, three hundred ninety-four".