1899879672629 has 2 divisors, whose sum is σ = 1899879672630. Its totient is φ = 1899879672628.

The previous prime is 1899879672589. The next prime is 1899879672671. The reversal of 1899879672629 is 9262769789981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274024640529 + 625855032100 = 1128727^2 + 791110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1899879672629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1899879674629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949939836314 + 949939836315.

It is an arithmetic number, because the mean of its divisors is an integer number (949939836315).

Almost surely, 2^{1899879672629} is an apocalyptic number.

It is an amenable number.

1899879672629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1899879672629 is an equidigital number, since it uses as much as digits as its factorization.

1899879672629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2962842624, while the sum is 83.

The spelling of 1899879672629 in words is "one trillion, eight hundred ninety-nine billion, eight hundred seventy-nine million, six hundred seventy-two thousand, six hundred twenty-nine".