1982239505 has 16 divisors (see below), whose sum is σ = 2564956800. Its totient is φ = 1465683840.

The previous prime is 1982239489. The next prime is 1982239537. The reversal of 1982239505 is 5059322891.

It is not a de Polignac number, because 1982239505 - 2⁴ = 1982239489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250565 + ... + 258354.

It is an arithmetic number, because the mean of its divisors is an integer number (160309800).

Almost surely, 2^1982239505 is an apocalyptic number.

It is an amenable number.

1982239505 is a deficient number, since it is larger than the sum of its proper divisors (582717295).

1982239505 is a wasteful number, since it uses less digits than its factorization.

1982239505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508984.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 1982239505 is about 44522.3483769668. The cubic root of 1982239505 is about 1256.1804853163.

The spelling of 1982239505 in words is "one billion, nine hundred eighty-two million, two hundred thirty-nine thousand, five hundred five".