1129245081 has 8 divisors (see below), whose sum is σ = 1506755904. Its totient is φ = 752282160.

The previous prime is 1129245067. The next prime is 1129245101. The reversal of 1129245081 is 1805429211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1129245081 - 2⁵ = 1129245049 is a prime.

It is a super-2 number, since 2×1129245081² = 2550388905925393122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1129249081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132141 + ... + 140426.

It is an arithmetic number, because the mean of its divisors is an integer number (188344488).

Almost surely, 2^1129245081 is an apocalyptic number.

It is an amenable number.

1129245081 is a deficient number, since it is larger than the sum of its proper divisors (377510823).

1129245081 is a wasteful number, since it uses less digits than its factorization.

1129245081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273951.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1129245081 is about 33604.2420090083. The cubic root of 1129245081 is about 1041.3484361177.

The spelling of 1129245081 in words is "one billion, one hundred twenty-nine million, two hundred forty-five thousand, eighty-one".