1129008761 has 4 divisors (see below), whose sum is σ = 1153030272. Its totient is φ = 1104987252.

The previous prime is 1129008757. The next prime is 1129008763. The reversal of 1129008761 is 1678009211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1129008761 - 2² = 1129008757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129008763) 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, 12010685 + ... + 12010778.

It is an arithmetic number, because the mean of its divisors is an integer number (288257568).

Almost surely, 2^1129008761 is an apocalyptic number.

It is an amenable number.

1129008761 is a deficient number, since it is larger than the sum of its proper divisors (24021511).

1129008761 is an equidigital number, since it uses as much as digits as its factorization.

1129008761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24021510.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1129008761 is about 33600.7256022842. The cubic root of 1129008761 is about 1041.2757891682.

The spelling of 1129008761 in words is "one billion, one hundred twenty-nine million, eight thousand, seven hundred sixty-one".