1097499798 has 48 divisors (see below), whose sum is σ = 2431141440. Its totient is φ = 357725808.

The previous prime is 1097499743. The next prime is 1097499803. The reversal of 1097499798 is 8979947901.

It is a super-3 number, since 3×1097499798³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164361 + ... + 170907.

It is an arithmetic number, because the mean of its divisors is an integer number (50648780).

Almost surely, 2^1097499798 is an apocalyptic number.

1097499798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1097499798 is an abundant number, since it is smaller than the sum of its proper divisors (1333641642).

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

1097499798 is a wasteful number, since it uses less digits than its factorization.

1097499798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761 (or 6758 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 63.

The square root of 1097499798 is about 33128.5344982237. The cubic root of 1097499798 is about 1031.4974285854.

The spelling of 1097499798 in words is "one billion, ninety-seven million, four hundred ninety-nine thousand, seven hundred ninety-eight".