1764959951849 has 2 divisors, whose sum is σ = 1764959951850. Its totient is φ = 1764959951848.

The previous prime is 1764959951831. The next prime is 1764959951857. The reversal of 1764959951849 is 9481599594671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1715628432400 + 49331519449 = 1309820^2 + 222107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1764959951849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1764959951849.

It is not a weakly prime, because it can be changed into another prime (1764959951879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 882479975924 + 882479975925.

It is an arithmetic number, because the mean of its divisors is an integer number (882479975925).

Almost surely, 2^{1764959951849} is an apocalyptic number.

It is an amenable number.

1764959951849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1764959951849 is an equidigital number, since it uses as much as digits as its factorization.

1764959951849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 881798400, while the sum is 77.

The spelling of 1764959951849 in words is "one trillion, seven hundred sixty-four billion, nine hundred fifty-nine million, nine hundred fifty-one thousand, eight hundred forty-nine".