1098353709 has 16 divisors (see below), whose sum is σ = 1627743040. Its totient is φ = 731987280.

The previous prime is 1098353701. The next prime is 1098353759. The reversal of 1098353709 is 9073538901.

It is a happy number.

1098353709 is a `hidden beast` number, since 109 + 8 + 3 + 537 + 0 + 9 = 666.

It is not a de Polignac number, because 1098353709 - 2³ = 1098353701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098353701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110274 + ... + 119820.

It is an arithmetic number, because the mean of its divisors is an integer number (101733940).

Almost surely, 2^1098353709 is an apocalyptic number.

It is an amenable number.

1098353709 is a deficient number, since it is larger than the sum of its proper divisors (529389331).

1098353709 is an equidigital number, since it uses as much as digits as its factorization.

1098353709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13817 (or 13811 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1098353709 is about 33141.4198398318. The cubic root of 1098353709 is about 1031.7648784940.

The spelling of 1098353709 in words is "one billion, ninety-eight million, three hundred fifty-three thousand, seven hundred nine".