1098994698 has 12 divisors (see below), whose sum is σ = 2381155218. Its totient is φ = 366331560.

The previous prime is 1098994691. The next prime is 1098994703. The reversal of 1098994698 is 8964998901.

It can be written as a sum of positive squares in only one way, i.e., 1096735689 + 2259009 = 33117^2 + 1503^2 .

It is a super-2 number, since 2×1098994698² = 2415578692464222408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1098994691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30527613 + ... + 30527648.

Almost surely, 2^1098994698 is an apocalyptic number.

1098994698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1098994698 is an abundant number, since it is smaller than the sum of its proper divisors (1282160520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098994698 is a wasteful number, since it uses less digits than its factorization.

1098994698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61055269 (or 61055266 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The square root of 1098994698 is about 33151.0889413907. The cubic root of 1098994698 is about 1031.9655489220.

The spelling of 1098994698 in words is "one billion, ninety-eight million, nine hundred ninety-four thousand, six hundred ninety-eight".