1983318634 has 16 divisors (see below), whose sum is σ = 3436338816. Its totient is φ = 848478400.

The previous prime is 1983318577. The next prime is 1983318661. The reversal of 1983318634 is 4368133891.

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, 2651122 + ... + 2651869.

It is an arithmetic number, because the mean of its divisors is an integer number (214771176).

Almost surely, 2^1983318634 is an apocalyptic number.

1983318634 is a deficient number, since it is larger than the sum of its proper divisors (1453020182).

1983318634 is a wasteful number, since it uses less digits than its factorization.

1983318634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303021.

The product of its digits is 373248, while the sum is 46.

The square root of 1983318634 is about 44534.4656867016. The cubic root of 1983318634 is about 1256.4083983863.

The spelling of 1983318634 in words is "one billion, nine hundred eighty-three million, three hundred eighteen thousand, six hundred thirty-four".