1830654989 has 2 divisors, whose sum is σ = 1830654990. Its totient is φ = 1830654988.

The previous prime is 1830654967. The next prime is 1830655049. The reversal of 1830654989 is 9894560381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1516479364 + 314175625 = 38942^2 + 17725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830654989 - 2⁸ = 1830654733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1830654989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1830657989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915327494 + 915327495.

It is an arithmetic number, because the mean of its divisors is an integer number (915327495).

Almost surely, 2^1830654989 is an apocalyptic number.

It is an amenable number.

1830654989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1830654989 is an equidigital number, since it uses as much as digits as its factorization.

1830654989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 1830654989 is about 42786.1541739848. The cubic root of 1830654989 is about 1223.3071135470.

The spelling of 1830654989 in words is "one billion, eight hundred thirty million, six hundred fifty-four thousand, nine hundred eighty-nine".