1098509147 has 2 divisors, whose sum is σ = 1098509148. Its totient is φ = 1098509146.

The previous prime is 1098509143. The next prime is 1098509173. The reversal of 1098509147 is 7419058901.

It is a weak prime.

It is an emirp because it is prime and its reverse (7419058901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1098509147 - 2² = 1098509143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1098509098 and 1098509107.

It is not a weakly prime, because it can be changed into another prime (1098509143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549254573 + 549254574.

It is an arithmetic number, because the mean of its divisors is an integer number (549254574).

Almost surely, 2^1098509147 is an apocalyptic number.

1098509147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098509147 is an equidigital number, since it uses as much as digits as its factorization.

1098509147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1098509147 is about 33143.7648283957. The cubic root of 1098509147 is about 1031.8135476683.

The spelling of 1098509147 in words is "one billion, ninety-eight million, five hundred nine thousand, one hundred forty-seven".