1161663247 has 2 divisors, whose sum is σ = 1161663248. Its totient is φ = 1161663246.

The previous prime is 1161663241. The next prime is 1161663257. The reversal of 1161663247 is 7423661611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161663247 - 2¹¹ = 1161661199 is a prime.

It is a super-2 number, since 2×1161663247² = 2698922998861166018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161663241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580831623 + 580831624.

It is an arithmetic number, because the mean of its divisors is an integer number (580831624).

Almost surely, 2^1161663247 is an apocalyptic number.

1161663247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161663247 is an equidigital number, since it uses as much as digits as its factorization.

1161663247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 1161663247 is about 34083.1812922444. The cubic root of 1161663247 is about 1051.2195194012.

The spelling of 1161663247 in words is "one billion, one hundred sixty-one million, six hundred sixty-three thousand, two hundred forty-seven".