1145647867 has 16 divisors (see below), whose sum is σ = 1492972992. Its totient is φ = 853125120.

The previous prime is 1145647859. The next prime is 1145647897. The reversal of 1145647867 is 7687465411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1145647867 - 2³ = 1145647859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145647867.

It is not an unprimeable number, because it can be changed into a prime (1145647847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368734 + ... + 371827.

It is an arithmetic number, because the mean of its divisors is an integer number (93310812).

Almost surely, 2^1145647867 is an apocalyptic number.

1145647867 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1145647867 is a deficient number, since it is larger than the sum of its proper divisors (347325125).

1145647867 is a wasteful number, since it uses less digits than its factorization.

1145647867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740598.

The product of its digits is 1128960, while the sum is 49.

The square root of 1145647867 is about 33847.4203891523. The cubic root of 1145647867 is about 1046.3662347982.

The spelling of 1145647867 in words is "one billion, one hundred forty-five million, six hundred forty-seven thousand, eight hundred sixty-seven".