1145489816 has 32 divisors (see below), whose sum is σ = 2202742080. Its totient is φ = 558124800.

The previous prime is 1145489749. The next prime is 1145489837. The reversal of 1145489816 is 6189845411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402350 + ... + 405186.

It is an arithmetic number, because the mean of its divisors is an integer number (68835690).

Almost surely, 2^1145489816 is an apocalyptic number.

It is an amenable number.

1145489816 is a deficient number, since it is larger than the sum of its proper divisors (1057252264).

1145489816 is a wasteful number, since it uses less digits than its factorization.

1145489816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115 (or 4111 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 1145489816 is about 33845.0855516720. The cubic root of 1145489816 is about 1046.3181144754.

The spelling of 1145489816 in words is "one billion, one hundred forty-five million, four hundred eighty-nine thousand, eight hundred sixteen".