1151011151 has 4 divisors (see below), whose sum is σ = 1151526552. Its totient is φ = 1150495752.

The previous prime is 1151011139. The next prime is 1151011177. The reversal of 1151011151 is 1511101511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1151011151 - 2⁶ = 1151011087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151016151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254336 + ... + 258821.

It is an arithmetic number, because the mean of its divisors is an integer number (287881638).

Almost surely, 2^1151011151 is an apocalyptic number.

1151011151 is a deficient number, since it is larger than the sum of its proper divisors (515401).

1151011151 is an equidigital number, since it uses as much as digits as its factorization.

1151011151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515400.

The product of its (nonzero) digits is 25, while the sum is 17.

The square root of 1151011151 is about 33926.5552480649. Note that the first 3 decimals coincide. The cubic root of 1151011151 is about 1047.9965276651.

Adding to 1151011151 its reverse (1511101511), we get a palindrome (2662112662).

The spelling of 1151011151 in words is "one billion, one hundred fifty-one million, eleven thousand, one hundred fifty-one".