1045189187 has 8 divisors (see below), whose sum is σ = 1195580256. Its totient is φ = 895067712.

The previous prime is 1045189169. The next prime is 1045189217. The reversal of 1045189187 is 7819815401.

It is a happy number.

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

It is not a de Polignac number, because 1045189187 - 2¹⁰ = 1045188163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045189127) 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, 59018 + ... + 74655.

It is an arithmetic number, because the mean of its divisors is an integer number (149447532).

Almost surely, 2^1045189187 is an apocalyptic number.

1045189187 is a deficient number, since it is larger than the sum of its proper divisors (150391069).

1045189187 is a wasteful number, since it uses less digits than its factorization.

1045189187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134797.

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 1045189187 is about 32329.3858122916. The cubic root of 1045189187 is about 1014.8416966185.

The spelling of 1045189187 in words is "one billion, forty-five million, one hundred eighty-nine thousand, one hundred eighty-seven".