1982023637 has 4 divisors (see below), whose sum is σ = 2162207616. Its totient is φ = 1801839660.

The previous prime is 1982023619. The next prime is 1982023663. The reversal of 1982023637 is 7363202891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1982023637 - 2⁶ = 1982023573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1982023594 and 1982023603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982023237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90091973 + ... + 90091994.

It is an arithmetic number, because the mean of its divisors is an integer number (540551904).

Almost surely, 2^1982023637 is an apocalyptic number.

It is an amenable number.

1982023637 is a deficient number, since it is larger than the sum of its proper divisors (180183979).

1982023637 is a wasteful number, since it uses less digits than its factorization.

1982023637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180183978.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1982023637 is about 44519.9240453081. The cubic root of 1982023637 is about 1256.1348838619.

The spelling of 1982023637 in words is "one billion, nine hundred eighty-two million, twenty-three thousand, six hundred thirty-seven".