1982337451 has 4 divisors (see below), whose sum is σ = 1982509992. Its totient is φ = 1982164912.

The previous prime is 1982337443. The next prime is 1982337491. The reversal of 1982337451 is 1547332891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1982337451 - 2³ = 1982337443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1982337398 and 1982337407.

It is not an unprimeable number, because it can be changed into a prime (1982337491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67705 + ... + 92458.

It is an arithmetic number, because the mean of its divisors is an integer number (495627498).

Almost surely, 2^1982337451 is an apocalyptic number.

1982337451 is a deficient number, since it is larger than the sum of its proper divisors (172541).

1982337451 is a wasteful number, since it uses less digits than its factorization.

1982337451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172540.

The product of its digits is 181440, while the sum is 43.

The square root of 1982337451 is about 44523.4483278194. The cubic root of 1982337451 is about 1256.2011750172.

The spelling of 1982337451 in words is "one billion, nine hundred eighty-two million, three hundred thirty-seven thousand, four hundred fifty-one".