1145887065 has 48 divisors (see below), whose sum is σ = 2039821056. Its totient is φ = 594720000.

The previous prime is 1145887049. The next prime is 1145887079. The reversal of 1145887065 is 5607885411.

1145887065 is a `hidden beast` number, since 1 + 1 + 4 + 588 + 7 + 0 + 65 = 666.

It is not a de Polignac number, because 1145887065 - 2⁴ = 1145887049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1145887065.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1385182 + ... + 1386008.

It is an arithmetic number, because the mean of its divisors is an integer number (42496272).

Almost surely, 2^1145887065 is an apocalyptic number.

1145887065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145887065 is a deficient number, since it is larger than the sum of its proper divisors (893933991).

1145887065 is a wasteful number, since it uses less digits than its factorization.

1145887065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The square root of 1145887065 is about 33850.9536793279. The cubic root of 1145887065 is about 1046.4390527791.

It can be divided in two parts, 11 and 45887065, that added together give a square (45887076 = 6774²).

The spelling of 1145887065 in words is "one billion, one hundred forty-five million, eight hundred eighty-seven thousand, sixty-five".