1045186489 has 4 divisors (see below), whose sum is σ = 1045612624. Its totient is φ = 1044760356.

The previous prime is 1045186451. The next prime is 1045186501. The reversal of 1045186489 is 9846815401.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9846815401 = 43 ⋅228995707.

It is a cyclic number.

It is not a de Polignac number, because 1045186489 - 2¹³ = 1045178297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045196489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209367 + ... + 214300.

It is an arithmetic number, because the mean of its divisors is an integer number (261403156).

Almost surely, 2^1045186489 is an apocalyptic number.

It is an amenable number.

1045186489 is a deficient number, since it is larger than the sum of its proper divisors (426135).

1045186489 is an equidigital number, since it uses as much as digits as its factorization.

1045186489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426134.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 1045186489 is about 32329.3440855208. The cubic root of 1045186489 is about 1014.8408233969.

The spelling of 1045186489 in words is "one billion, forty-five million, one hundred eighty-six thousand, four hundred eighty-nine".