15191089 has 8 divisors (see below), whose sum is σ = 16217280. Its totient is φ = 14187600.

The previous prime is 15191087. The next prime is 15191093. The reversal of 15191089 is 98019151.

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

It is a cyclic number.

It is not a de Polignac number, because 15191089 - 2¹ = 15191087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15191087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4282 + ... + 6979.

It is an arithmetic number, because the mean of its divisors is an integer number (2027160).

Almost surely, 2^15191089 is an apocalyptic number.

15191089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

15191089 is a deficient number, since it is larger than the sum of its proper divisors (1026191).

15191089 is a wasteful number, since it uses less digits than its factorization.

15191089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 15191089 is about 3897.5747587442. The cubic root of 15191089 is about 247.6640493190.

The spelling of 15191089 in words is "fifteen million, one hundred ninety-one thousand, eighty-nine".