1152776385 has 24 divisors (see below), whose sum is σ = 2062604544. Its totient is φ = 594980640.

The previous prime is 1152776369. The next prime is 1152776413. The reversal of 1152776385 is 5836772511.

It is a happy number.

1152776385 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 7 + 7 + 638 + 5 = 666.

It is not a de Polignac number, because 1152776385 - 2⁴ = 1152776369 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1152776385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411787 + ... + 414576.

It is an arithmetic number, because the mean of its divisors is an integer number (85941856).

Almost surely, 2^1152776385 is an apocalyptic number.

1152776385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1152776385 is a deficient number, since it is larger than the sum of its proper divisors (909828159).

1152776385 is a wasteful number, since it uses less digits than its factorization.

1152776385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826405 (or 826402 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 1152776385 is about 33952.5608018011. The cubic root of 1152776385 is about 1048.5320029828.

The spelling of 1152776385 in words is "one billion, one hundred fifty-two million, seven hundred seventy-six thousand, three hundred eighty-five".