1161242763 has 4 divisors (see below), whose sum is σ = 1548323688. Its totient is φ = 774161840.

The previous prime is 1161242759. The next prime is 1161242813. The reversal of 1161242763 is 3672421611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1161242763 - 2² = 1161242759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161242063) 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, 193540458 + ... + 193540463.

It is an arithmetic number, because the mean of its divisors is an integer number (387080922).

Almost surely, 2^1161242763 is an apocalyptic number.

1161242763 is a deficient number, since it is larger than the sum of its proper divisors (387080925).

1161242763 is an equidigital number, since it uses as much as digits as its factorization.

1161242763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387080924.

The product of its digits is 12096, while the sum is 33.

The square root of 1161242763 is about 34077.0122369905. The cubic root of 1161242763 is about 1051.0926684305.

The spelling of 1161242763 in words is "one billion, one hundred sixty-one million, two hundred forty-two thousand, seven hundred sixty-three".