1982481531 has 4 divisors (see below), whose sum is σ = 2643308712. Its totient is φ = 1321654352.

The previous prime is 1982481511. The next prime is 1982481533. The reversal of 1982481531 is 1351842891.

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 1982481531 - 2⁶ = 1982481467 is a prime.

It is a super-2 number, since 2×1982481531² = 7860466041512207922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1982481533) 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, 330413586 + ... + 330413591.

It is an arithmetic number, because the mean of its divisors is an integer number (660827178).

Almost surely, 2^1982481531 is an apocalyptic number.

1982481531 is a deficient number, since it is larger than the sum of its proper divisors (660827181).

1982481531 is an equidigital number, since it uses as much as digits as its factorization.

1982481531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660827180.

The product of its digits is 69120, while the sum is 42.

The square root of 1982481531 is about 44525.0663222415. The cubic root of 1982481531 is about 1256.2316086315.

The spelling of 1982481531 in words is "one billion, nine hundred eighty-two million, four hundred eighty-one thousand, five hundred thirty-one".