1972660499 has 2 divisors, whose sum is σ = 1972660500. Its totient is φ = 1972660498.

The previous prime is 1972660493. The next prime is 1972660519. The reversal of 1972660499 is 9940662791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1972660499 - 2¹⁶ = 1972594963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1972660499.

It is not a weakly prime, because it can be changed into another prime (1972660493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986330249 + 986330250.

It is an arithmetic number, because the mean of its divisors is an integer number (986330250).

Almost surely, 2^1972660499 is an apocalyptic number.

1972660499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972660499 is an equidigital number, since it uses as much as digits as its factorization.

1972660499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 1972660499 is about 44414.6428444494. The cubic root of 1972660499 is about 1254.1537548872.

The spelling of 1972660499 in words is "one billion, nine hundred seventy-two million, six hundred sixty thousand, four hundred ninety-nine".