1154131265 has 16 divisors (see below), whose sum is σ = 1583989248. Its totient is φ = 790814016.

The previous prime is 1154131261. The next prime is 1154131289. The reversal of 1154131265 is 5621314511.

It is a cyclic number.

It is not a de Polignac number, because 1154131265 - 2² = 1154131261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154131261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38219 + ... + 61391.

It is an arithmetic number, because the mean of its divisors is an integer number (98999328).

Almost surely, 2^1154131265 is an apocalyptic number.

It is an amenable number.

1154131265 is a deficient number, since it is larger than the sum of its proper divisors (429857983).

1154131265 is a wasteful number, since it uses less digits than its factorization.

1154131265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24608.

The product of its digits is 3600, while the sum is 29.

The square root of 1154131265 is about 33972.5074876730. The cubic root of 1154131265 is about 1048.9426286847.

Adding to 1154131265 its reverse (5621314511), we get a palindrome (6775445776).

The spelling of 1154131265 in words is "one billion, one hundred fifty-four million, one hundred thirty-one thousand, two hundred sixty-five".