1898083489 has 9 divisors (see below), whose sum is σ = 2004114483. Its totient is φ = 1797400152.

The previous prime is 1898083463. The next prime is 1898083543. The reversal of 1898083489 is 9843808981.

The square root of 1898083489 is 43567.

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

It can be written as a sum of positive squares in only one way, i.e., 550606225 + 1347477264 = 23465^2 + 36708^2 .

It is not a de Polignac number, because 1898083489 - 2¹⁹ = 1897559201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1898083409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 826627 + ... + 828919.

It is an arithmetic number, because the mean of its divisors is an integer number (222679387).

Almost surely, 2^1898083489 is an apocalyptic number.

1898083489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1898083489 is the 43567-th square number.

1898083489 is the 21784-th centered octagonal number.

It is an amenable number.

1898083489 is a deficient number, since it is larger than the sum of its proper divisors (106030994).

1898083489 is an frugal number, since it uses more digits than its factorization.

1898083489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624 (or 2312 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 58.

The cubic root of 1898083489 is about 1238.1457477193.

The spelling of 1898083489 in words is "one billion, eight hundred ninety-eight million, eighty-three thousand, four hundred eighty-nine".