1889764873229 has 2 divisors, whose sum is σ = 1889764873230. Its totient is φ = 1889764873228.

The previous prime is 1889764873187. The next prime is 1889764873253. The reversal of 1889764873229 is 9223784679881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1281419472004 + 608345401225 = 1131998^2 + 779965^2 .

It is an emirp because it is prime and its reverse (9223784679881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1889764873229 - 2²⁰ = 1889763824653 is a prime.

It is a super-2 number, since 2×1889764873229² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889764873279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944882436614 + 944882436615.

It is an arithmetic number, because the mean of its divisors is an integer number (944882436615).

Almost surely, 2^{1889764873229} is an apocalyptic number.

It is an amenable number.

1889764873229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889764873229 is an equidigital number, since it uses as much as digits as its factorization.

1889764873229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 585252864, while the sum is 74.

The spelling of 1889764873229 in words is "one trillion, eight hundred eighty-nine billion, seven hundred sixty-four million, eight hundred seventy-three thousand, two hundred twenty-nine".