1898930852289 has 15 divisors (see below), whose sum is σ = 2836693009843. Its totient is φ = 1265945633424.

The previous prime is 1898930852239. The next prime is 1898930852303. The reversal of 1898930852289 is 9822580398981.

The square root of 1898930852289 is 1378017.

It is a perfect power (a square), and thus also a powerful number.

1898930852289 is a `hidden beast` number, since 1 + 8 + 9 + 8 + 93 + 0 + 8 + 522 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1122783948225 + 776146904064 = 1059615^2 + 880992^2 .

It is not a de Polignac number, because 1898930852289 - 2⁹ = 1898930851777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1898930852239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12325597 + ... + 12478709.

Almost surely, 2^{1898930852289} is an apocalyptic number.

1898930852289 is the 1378017-th square number.

1898930852289 is the 689009-th centered octagonal number.

It is an amenable number.

1898930852289 is a deficient number, since it is larger than the sum of its proper divisors (937762157554).

1898930852289 is an frugal number, since it uses more digits than its factorization.

1898930852289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306238 (or 153116 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 72.

The spelling of 1898930852289 in words is "one trillion, eight hundred ninety-eight billion, nine hundred thirty million, eight hundred fifty-two thousand, two hundred eighty-nine".