1098823049 has 2 divisors, whose sum is σ = 1098823050. Its totient is φ = 1098823048.

The previous prime is 1098823043. The next prime is 1098823057. The reversal of 1098823049 is 9403288901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929823049 + 169000000 = 30493^2 + 13000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098823049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1098823043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549411524 + 549411525.

It is an arithmetic number, because the mean of its divisors is an integer number (549411525).

Almost surely, 2^1098823049 is an apocalyptic number.

It is an amenable number.

1098823049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098823049 is an equidigital number, since it uses as much as digits as its factorization.

1098823049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1098823049 is about 33148.4999509782. The cubic root of 1098823049 is about 1031.9118194916.

The spelling of 1098823049 in words is "one billion, ninety-eight million, eight hundred twenty-three thousand, forty-nine".