1129766531 has 2 divisors, whose sum is σ = 1129766532. Its totient is φ = 1129766530.

The previous prime is 1129766489. The next prime is 1129766549. The reversal of 1129766531 is 1356679211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129766531 is a prime.

It is a super-2 number, since 2×1129766531² = 2552744829135547922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1129766431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564883265 + 564883266.

It is an arithmetic number, because the mean of its divisors is an integer number (564883266).

Almost surely, 2^1129766531 is an apocalyptic number.

1129766531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129766531 is an equidigital number, since it uses as much as digits as its factorization.

1129766531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 1129766531 is about 33611.9998066167. Note that the first 3 decimals coincide. The cubic root of 1129766531 is about 1041.5086988132.

The spelling of 1129766531 in words is "one billion, one hundred twenty-nine million, seven hundred sixty-six thousand, five hundred thirty-one".