1161611067 has 16 divisors (see below), whose sum is σ = 1618824960. Its totient is φ = 739513632.

The previous prime is 1161611051. The next prime is 1161611089. The reversal of 1161611067 is 7601161611.

It is not a de Polignac number, because 1161611067 - 2⁴ = 1161611051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161611167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29113 + ... + 56309.

It is an arithmetic number, because the mean of its divisors is an integer number (101176560).

Almost surely, 2^1161611067 is an apocalyptic number.

1161611067 is a deficient number, since it is larger than the sum of its proper divisors (457213893).

1161611067 is a wasteful number, since it uses less digits than its factorization.

1161611067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27842.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 1161611067 is about 34082.4158034609. The cubic root of 1161611067 is about 1051.2037794823.

Adding to 1161611067 its reverse (7601161611), we get a palindrome (8762772678).

The spelling of 1161611067 in words is "one billion, one hundred sixty-one million, six hundred eleven thousand, sixty-seven".