2763981989 has 2 divisors, whose sum is σ = 2763981990. Its totient is φ = 2763981988.

The previous prime is 2763981947. The next prime is 2763982007. The reversal of 2763981989 is 9891893672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2437890625 + 326091364 = 49375^2 + 18058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2763981989 is a prime.

It is a super-2 number, since 2×2763981989² = 15279192871032792242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2763971989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1381990994 + 1381990995.

It is an arithmetic number, because the mean of its divisors is an integer number (1381990995).

Almost surely, 2^2763981989 is an apocalyptic number.

It is an amenable number.

2763981989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2763981989 is an equidigital number, since it uses as much as digits as its factorization.

2763981989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 62.

The square root of 2763981989 is about 52573.5864194179. The cubic root of 2763981989 is about 1403.3900817840.

The spelling of 2763981989 in words is "two billion, seven hundred sixty-three million, nine hundred eighty-one thousand, nine hundred eighty-nine".