1982399955 has 16 divisors (see below), whose sum is σ = 3174017184. Its totient is φ = 1056554240.

The previous prime is 1982399929. The next prime is 1982399963. The reversal of 1982399955 is 5599932891.

It is not a de Polignac number, because 1982399955 - 2⁶ = 1982399891 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, 22404 + ... + 66833.

It is an arithmetic number, because the mean of its divisors is an integer number (198376074).

Almost surely, 2^1982399955 is an apocalyptic number.

1982399955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1982399955 is a deficient number, since it is larger than the sum of its proper divisors (1191617229).

1982399955 is a wasteful number, since it uses less digits than its factorization.

1982399955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90726.

The product of its digits is 7873200, while the sum is 60.

The square root of 1982399955 is about 44524.1502445583. The cubic root of 1982399955 is about 1256.2143777429.

The spelling of 1982399955 in words is "one billion, nine hundred eighty-two million, three hundred ninety-nine thousand, nine hundred fifty-five".