1982453633 has 4 divisors (see below), whose sum is σ = 1983212628. Its totient is φ = 1981694640.

The previous prime is 1982453611. The next prime is 1982453777. The reversal of 1982453633 is 3363542891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3363542891 = 331 ⋅10161761.

It can be written as a sum of positive squares in 2 ways, for example, as 910349584 + 1072104049 = 30172^2 + 32743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982453633 - 2²⁴ = 1965676417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982453533) 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, 375566 + ... + 380807.

It is an arithmetic number, because the mean of its divisors is an integer number (495803157).

Almost surely, 2^1982453633 is an apocalyptic number.

It is an amenable number.

1982453633 is a deficient number, since it is larger than the sum of its proper divisors (758995).

1982453633 is an equidigital number, since it uses as much as digits as its factorization.

1982453633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758994.

The product of its digits is 466560, while the sum is 44.

The square root of 1982453633 is about 44524.7530369344. The cubic root of 1982453633 is about 1256.2257159303.

The spelling of 1982453633 in words is "one billion, nine hundred eighty-two million, four hundred fifty-three thousand, six hundred thirty-three".