1971164023 has 2 divisors, whose sum is σ = 1971164024. Its totient is φ = 1971164022.

The previous prime is 1971163979. The next prime is 1971164051. The reversal of 1971164023 is 3204611791.

It is a strong prime.

It is an emirp because it is prime and its reverse (3204611791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1971164023 is a prime.

It is a super-3 number, since 3×1971164023³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1971164023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1971162023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985582011 + 985582012.

It is an arithmetic number, because the mean of its divisors is an integer number (985582012).

Almost surely, 2^1971164023 is an apocalyptic number.

1971164023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1971164023 is an equidigital number, since it uses as much as digits as its factorization.

1971164023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1971164023 is about 44397.7929969497. The cubic root of 1971164023 is about 1253.8365376428.

The spelling of 1971164023 in words is "one billion, nine hundred seventy-one million, one hundred sixty-four thousand, twenty-three".