1098134197 has 4 divisors (see below), whose sum is σ = 1099180096. Its totient is φ = 1097088300.

The previous prime is 1098134183. The next prime is 1098134249. The reversal of 1098134197 is 7914318901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1098134197 - 2⁷ = 1098134069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098134497) 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, 521373 + ... + 523474.

It is an arithmetic number, because the mean of its divisors is an integer number (274795024).

Almost surely, 2^1098134197 is an apocalyptic number.

It is an amenable number.

1098134197 is a deficient number, since it is larger than the sum of its proper divisors (1045899).

1098134197 is a wasteful number, since it uses less digits than its factorization.

1098134197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045898.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1098134197 is about 33138.1079272791. The cubic root of 1098134197 is about 1031.6961392952.

The spelling of 1098134197 in words is "one billion, ninety-eight million, one hundred thirty-four thousand, one hundred ninety-seven".