1163186641 has 4 divisors (see below), whose sum is σ = 1169032000. Its totient is φ = 1157341284.

The previous prime is 1163186639. The next prime is 1163186653. The reversal of 1163186641 is 1466813611.

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 an emirpimes, since its reverse is a distinct semiprime: 1466813611 = 1223 ⋅1199357.

It is a cyclic number.

It is not a de Polignac number, because 1163186641 - 2¹ = 1163186639 is a prime.

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 1163186641.

It is not an unprimeable number, because it can be changed into a prime (1163186671) 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, 2922381 + ... + 2922778.

It is an arithmetic number, because the mean of its divisors is an integer number (292258000).

Almost surely, 2^1163186641 is an apocalyptic number.

It is an amenable number.

1163186641 is a deficient number, since it is larger than the sum of its proper divisors (5845359).

1163186641 is an equidigital number, since it uses as much as digits as its factorization.

1163186641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845358.

The product of its digits is 20736, while the sum is 37.

The square root of 1163186641 is about 34105.5221481801. The cubic root of 1163186641 is about 1051.6788383971.

The spelling of 1163186641 in words is "one billion, one hundred sixty-three million, one hundred eighty-six thousand, six hundred forty-one".