1141526161 has 4 divisors (see below), whose sum is σ = 1141798324. Its totient is φ = 1141254000.

The previous prime is 1141526147. The next prime is 1141526171. The reversal of 1141526161 is 1616251411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1616251411 = 5927 ⋅272693.

It can be written as a sum of positive squares in 2 ways, for example, as 1010286225 + 131239936 = 31785^2 + 11456^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141526161 - 2⁵ = 1141526129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141526171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129690 + ... + 138211.

It is an arithmetic number, because the mean of its divisors is an integer number (285449581).

Almost surely, 2^1141526161 is an apocalyptic number.

It is an amenable number.

1141526161 is a deficient number, since it is larger than the sum of its proper divisors (272163).

1141526161 is an equidigital number, since it uses as much as digits as its factorization.

1141526161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272162.

The product of its digits is 1440, while the sum is 28.

The square root of 1141526161 is about 33786.4789671845. The cubic root of 1141526161 is about 1045.1098870273.

Adding to 1141526161 its reverse (1616251411), we get a palindrome (2757777572).

The spelling of 1141526161 in words is "one billion, one hundred forty-one million, five hundred twenty-six thousand, one hundred sixty-one".