1982773231 has 2 divisors, whose sum is σ = 1982773232. Its totient is φ = 1982773230.

The previous prime is 1982773201. The next prime is 1982773267. The reversal of 1982773231 is 1323772891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1982773231 - 2¹³ = 1982765039 is a prime.

It is a super-2 number, since 2×1982773231² = 7862779371140358722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982773201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991386615 + 991386616.

It is an arithmetic number, because the mean of its divisors is an integer number (991386616).

Almost surely, 2^1982773231 is an apocalyptic number.

1982773231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982773231 is an equidigital number, since it uses as much as digits as its factorization.

1982773231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 1982773231 is about 44528.3418846918. The cubic root of 1982773231 is about 1256.2932190902.

The spelling of 1982773231 in words is "one billion, nine hundred eighty-two million, seven hundred seventy-three thousand, two hundred thirty-one".