1983238915 has 32 divisors (see below), whose sum is σ = 2750716800. Its totient is φ = 1344605184.

The previous prime is 1983238903. The next prime is 1983238987. The reversal of 1983238915 is 5198323891.

It is a cyclic number.

It is not a de Polignac number, because 1983238915 - 2²⁵ = 1949684483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1279561 + ... + 1281109.

It is an arithmetic number, because the mean of its divisors is an integer number (85959900).

Almost surely, 2^1983238915 is an apocalyptic number.

1983238915 is a deficient number, since it is larger than the sum of its proper divisors (767477885).

1983238915 is a wasteful number, since it uses less digits than its factorization.

1983238915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its digits is 466560, while the sum is 49.

The square root of 1983238915 is about 44533.5706518128. The cubic root of 1983238915 is about 1256.3915644862.

The spelling of 1983238915 in words is "one billion, nine hundred eighty-three million, two hundred thirty-eight thousand, nine hundred fifteen".