1972864471 has 2 divisors, whose sum is σ = 1972864472. Its totient is φ = 1972864470.

The previous prime is 1972864463. The next prime is 1972864483. The reversal of 1972864471 is 1744682791.

It is a weak prime.

It is an emirp because it is prime and its reverse (1744682791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1972864471 - 2³ = 1972864463 is a prime.

It is a super-3 number, since 3×1972864471³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972864451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986432235 + 986432236.

It is an arithmetic number, because the mean of its divisors is an integer number (986432236).

Almost surely, 2^1972864471 is an apocalyptic number.

1972864471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972864471 is an equidigital number, since it uses as much as digits as its factorization.

1972864471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 1972864471 is about 44416.9390097967. The cubic root of 1972864471 is about 1254.1969796647.

The spelling of 1972864471 in words is "one billion, nine hundred seventy-two million, eight hundred sixty-four thousand, four hundred seventy-one".