1982337291 has 12 divisors (see below), whose sum is σ = 3123683160. Its totient is φ = 1201416480.

The previous prime is 1982337289. The next prime is 1982337293. The reversal of 1982337291 is 1927332891.

1982337291 is a `hidden beast` number, since 198 + 2 + 3 + 372 + 91 = 666.

It is an interprime number because it is at equal distance from previous prime (1982337289) and next prime (1982337293).

It is not a de Polignac number, because 1982337291 - 2¹ = 1982337289 is a prime.

It is a super-2 number, since 2×1982337291² = 7859322270578437362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1982337293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10011706 + ... + 10011903.

It is an arithmetic number, because the mean of its divisors is an integer number (260306930).

Almost surely, 2^1982337291 is an apocalyptic number.

1982337291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1982337291 is a deficient number, since it is larger than the sum of its proper divisors (1141345869).

1982337291 is a wasteful number, since it uses less digits than its factorization.

1982337291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20023626 (or 20023623 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 1982337291 is about 44523.4465310133. The cubic root of 1982337291 is about 1256.2011412200.

The spelling of 1982337291 in words is "one billion, nine hundred eighty-two million, three hundred thirty-seven thousand, two hundred ninety-one".