1151005611 has 16 divisors (see below), whose sum is σ = 1787007744. Its totient is φ = 645307104.

The previous prime is 1151005577. The next prime is 1151005613. The reversal of 1151005611 is 1165001511.

It is a happy number.

It is not a de Polignac number, because 1151005611 - 2⁶ = 1151005547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1151005613) by changing a digit.

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, 515961 + ... + 518186.

It is an arithmetic number, because the mean of its divisors is an integer number (111687984).

Almost surely, 2^1151005611 is an apocalyptic number.

1151005611 is a deficient number, since it is larger than the sum of its proper divisors (636002133).

1151005611 is a wasteful number, since it uses less digits than its factorization.

1151005611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034210.

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 1151005611 is about 33926.4736010096. The cubic root of 1151005611 is about 1047.9948462710.

The spelling of 1151005611 in words is "one billion, one hundred fifty-one million, five thousand, six hundred eleven".