1098134191 has 16 divisors (see below), whose sum is σ = 1382404608. Its totient is φ = 847375200.

The previous prime is 1098134183. The next prime is 1098134249. The reversal of 1098134191 is 1914318901.

It is not a de Polignac number, because 1098134191 - 2³ = 1098134183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098134191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098134131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61300 + ... + 77161.

It is an arithmetic number, because the mean of its divisors is an integer number (86400288).

Almost surely, 2^1098134191 is an apocalyptic number.

1098134191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1098134191 is a deficient number, since it is larger than the sum of its proper divisors (284270417).

1098134191 is a wasteful number, since it uses less digits than its factorization.

1098134191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138582.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 1098134191 is about 33138.1078367489. The cubic root of 1098134191 is about 1031.6961374162.

The spelling of 1098134191 in words is "one billion, ninety-eight million, one hundred thirty-four thousand, one hundred ninety-one".