1129541761 has 12 divisors (see below), whose sum is σ = 1238609920. Its totient is φ = 1028796480.

The previous prime is 1129541729. The next prime is 1129541767. The reversal of 1129541761 is 1671459211.

It is not a de Polignac number, because 1129541761 - 2⁵ = 1129541729 is a prime.

It is a super-2 number, since 2×1129541761² = 2551729179685962242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129541761.

It is not an unprimeable number, because it can be changed into a prime (1129541767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54081 + ... + 71998.

Almost surely, 2^1129541761 is an apocalyptic number.

It is an amenable number.

1129541761 is a deficient number, since it is larger than the sum of its proper divisors (109068159).

1129541761 is a wasteful number, since it uses less digits than its factorization.

1129541761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126144 (or 126127 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 1129541761 is about 33608.6560427518. The cubic root of 1129541761 is about 1041.4396239408.

The spelling of 1129541761 in words is "one billion, one hundred twenty-nine million, five hundred forty-one thousand, seven hundred sixty-one".