1097909198 has 8 divisors (see below), whose sum is σ = 1743738192. Its totient is φ = 516663136.

The previous prime is 1097909191. The next prime is 1097909213. The reversal of 1097909198 is 8919097901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097909191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16145690 + ... + 16145757.

It is an arithmetic number, because the mean of its divisors is an integer number (217967274).

Almost surely, 2^1097909198 is an apocalyptic number.

1097909198 is a deficient number, since it is larger than the sum of its proper divisors (645828994).

1097909198 is a wasteful number, since it uses less digits than its factorization.

1097909198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32291466.

The product of its (nonzero) digits is 367416, while the sum is 53.

The square root of 1097909198 is about 33134.7128854318. The cubic root of 1097909198 is about 1031.6256723596.

The spelling of 1097909198 in words is "one billion, ninety-seven million, nine hundred nine thousand, one hundred ninety-eight".