1151147855 has 16 divisors (see below), whose sum is σ = 1622877984. Its totient is φ = 772798080.

The previous prime is 1151147849. The next prime is 1151147903. The reversal of 1151147855 is 5587411511.

It is a happy number.

It is not a de Polignac number, because 1151147855 - 2¹⁰ = 1151146831 is a prime.

It is a super-2 number, since 2×1151147855² = 2650282768142202050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804284 + ... + 805713.

It is an arithmetic number, because the mean of its divisors is an integer number (101429874).

Almost surely, 2^1151147855 is an apocalyptic number.

1151147855 is a deficient number, since it is larger than the sum of its proper divisors (471730129).

1151147855 is a wasteful number, since it uses less digits than its factorization.

1151147855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610026.

The product of its digits is 28000, while the sum is 38.

The square root of 1151147855 is about 33928.5698932330. The cubic root of 1151147855 is about 1048.0380157213.

The spelling of 1151147855 in words is "one billion, one hundred fifty-one million, one hundred forty-seven thousand, eight hundred fifty-five".