1898652256049 has 2 divisors, whose sum is σ = 1898652256050. Its totient is φ = 1898652256048.

The previous prime is 1898652255979. The next prime is 1898652256073. The reversal of 1898652256049 is 9406522568981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1757366481649 + 141285774400 = 1325657^2 + 375880^2 .

It is an emirp because it is prime and its reverse (9406522568981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1898652256049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1898652256099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949326128024 + 949326128025.

It is an arithmetic number, because the mean of its divisors is an integer number (949326128025).

Almost surely, 2^{1898652256049} is an apocalyptic number.

It is an amenable number.

1898652256049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898652256049 is an equidigital number, since it uses as much as digits as its factorization.

1898652256049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74649600, while the sum is 65.

The spelling of 1898652256049 in words is "one trillion, eight hundred ninety-eight billion, six hundred fifty-two million, two hundred fifty-six thousand, forty-nine".