1972749763 has 2 divisors, whose sum is σ = 1972749764. Its totient is φ = 1972749762.

The previous prime is 1972749761. The next prime is 1972749773. The reversal of 1972749763 is 3679472791.

It is a weak prime.

It is an emirp because it is prime and its reverse (3679472791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1972749763 - 2¹ = 1972749761 is a prime.

Together with 1972749761, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1972749761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986374881 + 986374882.

It is an arithmetic number, because the mean of its divisors is an integer number (986374882).

Almost surely, 2^1972749763 is an apocalyptic number.

1972749763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972749763 is an equidigital number, since it uses as much as digits as its factorization.

1972749763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 55.

The square root of 1972749763 is about 44415.6477268991. The cubic root of 1972749763 is about 1254.1726716567.

The spelling of 1972749763 in words is "one billion, nine hundred seventy-two million, seven hundred forty-nine thousand, seven hundred sixty-three".