1151887705 has 8 divisors (see below), whose sum is σ = 1404925704. Its totient is φ = 906403200.

The previous prime is 1151887699. The next prime is 1151887721. The reversal of 1151887705 is 5077881511.

It can be written as a sum of positive squares in 4 ways, for example, as 67436944 + 1084450761 = 8212^2 + 32931^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1151887705 - 2⁷ = 1151887577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1888036 + ... + 1888645.

It is an arithmetic number, because the mean of its divisors is an integer number (175615713).

Almost surely, 2^1151887705 is an apocalyptic number.

It is an amenable number.

1151887705 is a deficient number, since it is larger than the sum of its proper divisors (253037999).

1151887705 is an equidigital number, since it uses as much as digits as its factorization.

1151887705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776747.

The product of its (nonzero) digits is 78400, while the sum is 43.

The square root of 1151887705 is about 33939.4711950555. The cubic root of 1151887705 is about 1048.2624945218.

The spelling of 1151887705 in words is "one billion, one hundred fifty-one million, eight hundred eighty-seven thousand, seven hundred five".