1982136971 has 2 divisors, whose sum is σ = 1982136972. Its totient is φ = 1982136970.

The previous prime is 1982136929. The next prime is 1982136997. The reversal of 1982136971 is 1796312891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1982136971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1982136271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991068485 + 991068486.

It is an arithmetic number, because the mean of its divisors is an integer number (991068486).

Almost surely, 2^1982136971 is an apocalyptic number.

1982136971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982136971 is an equidigital number, since it uses as much as digits as its factorization.

1982136971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 1982136971 is about 44521.1968729503. The cubic root of 1982136971 is about 1256.1588257354.

The spelling of 1982136971 in words is "one billion, nine hundred eighty-two million, one hundred thirty-six thousand, nine hundred seventy-one".