1098942287 has 2 divisors, whose sum is σ = 1098942288. Its totient is φ = 1098942286.

The previous prime is 1098942209. The next prime is 1098942293. The reversal of 1098942287 is 7822498901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098942287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098932287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549471143 + 549471144.

It is an arithmetic number, because the mean of its divisors is an integer number (549471144).

Almost surely, 2^1098942287 is an apocalyptic number.

1098942287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098942287 is an equidigital number, since it uses as much as digits as its factorization.

1098942287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 1098942287 is about 33150.2984451121. The cubic root of 1098942287 is about 1031.9491438668.

The spelling of 1098942287 in words is "one billion, ninety-eight million, nine hundred forty-two thousand, two hundred eighty-seven".