1151541011 has 4 divisors (see below), whose sum is σ = 1151662224. Its totient is φ = 1151419800.

The previous prime is 1151540983. The next prime is 1151541049. The reversal of 1151541011 is 1101451511.

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 1151541011 - 2⁶ = 1151540947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151531011) 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, 45020 + ... + 65801.

It is an arithmetic number, because the mean of its divisors is an integer number (287915556).

Almost surely, 2^1151541011 is an apocalyptic number.

1151541011 is a deficient number, since it is larger than the sum of its proper divisors (121213).

1151541011 is a wasteful number, since it uses less digits than its factorization.

1151541011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121212.

The product of its (nonzero) digits is 100, while the sum is 20.

The square root of 1151541011 is about 33934.3632767730. The cubic root of 1151541011 is about 1048.1573156393.

Adding to 1151541011 its reverse (1101451511), we get a palindrome (2252992522).

The spelling of 1151541011 in words is "one billion, one hundred fifty-one million, five hundred forty-one thousand, eleven".