1162231661 has 4 divisors (see below), whose sum is σ = 1162323072. Its totient is φ = 1162140252.

The previous prime is 1162231627. The next prime is 1162231663. The reversal of 1162231661 is 1661322611.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1162231661 - 2¹⁸ = 1161969517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162231663) 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 3 ways as a sum of consecutive naturals, for example, 22811 + ... + 53336.

It is an arithmetic number, because the mean of its divisors is an integer number (290580768).

Almost surely, 2^1162231661 is an apocalyptic number.

It is an amenable number.

1162231661 is a deficient number, since it is larger than the sum of its proper divisors (91411).

1162231661 is an equidigital number, since it uses as much as digits as its factorization.

1162231661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91410.

The product of its digits is 2592, while the sum is 29.

The square root of 1162231661 is about 34091.5189013338. The cubic root of 1162231661 is about 1051.3909490190.

The spelling of 1162231661 in words is "one billion, one hundred sixty-two million, two hundred thirty-one thousand, six hundred sixty-one".