1145017849 has 4 divisors (see below), whose sum is σ = 1145177460. Its totient is φ = 1144858240.

The previous prime is 1145017837. The next prime is 1145017871. The reversal of 1145017849 is 9487105411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 343731600 + 801286249 = 18540^2 + 28307^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145017849 - 2⁷ = 1145017721 is a prime.

It is a super-2 number, since 2×1145017849² = 2622131749057173602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145087849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68512 + ... + 83569.

It is an arithmetic number, because the mean of its divisors is an integer number (286294365).

Almost surely, 2^1145017849 is an apocalyptic number.

It is an amenable number.

1145017849 is a deficient number, since it is larger than the sum of its proper divisors (159611).

1145017849 is an equidigital number, since it uses as much as digits as its factorization.

1145017849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159610.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 1145017849 is about 33838.1123734762. The cubic root of 1145017849 is about 1046.1743927089.

The spelling of 1145017849 in words is "one billion, one hundred forty-five million, seventeen thousand, eight hundred forty-nine".