1097543189 has 8 divisors (see below), whose sum is σ = 1192577280. Its totient is φ = 1006236000.

The previous prime is 1097543179. The next prime is 1097543203. The reversal of 1097543189 is 9813457901.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097543189 is a prime.

It is a super-3 number, since 3×1097543189³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097543149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931112 + ... + 932289.

It is an arithmetic number, because the mean of its divisors is an integer number (149072160).

Almost surely, 2^1097543189 is an apocalyptic number.

1097543189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1097543189 is a deficient number, since it is larger than the sum of its proper divisors (95034091).

1097543189 is a wasteful number, since it uses less digits than its factorization.

1097543189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863451.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 1097543189 is about 33129.1893803637. The cubic root of 1097543189 is about 1031.5110222448.

The spelling of 1097543189 in words is "one billion, ninety-seven million, five hundred forty-three thousand, one hundred eighty-nine".