1098491347 has 2 divisors, whose sum is σ = 1098491348. Its totient is φ = 1098491346.

The previous prime is 1098491309. The next prime is 1098491351. The reversal of 1098491347 is 7431948901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1098491347 - 2¹¹ = 1098489299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1098491297 and 1098491306.

It is not a weakly prime, because it can be changed into another prime (1098491447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549245673 + 549245674.

It is an arithmetic number, because the mean of its divisors is an integer number (549245674).

Almost surely, 2^1098491347 is an apocalyptic number.

1098491347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098491347 is an equidigital number, since it uses as much as digits as its factorization.

1098491347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1098491347 is about 33143.4963001793. The cubic root of 1098491347 is about 1031.8079745451.

The spelling of 1098491347 in words is "one billion, ninety-eight million, four hundred ninety-one thousand, three hundred forty-seven".