1201161263 has 2 divisors, whose sum is σ = 1201161264. Its totient is φ = 1201161262.

The previous prime is 1201161259. The next prime is 1201161307. The reversal of 1201161263 is 3621611021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201161263 - 2² = 1201161259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201161463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600580631 + 600580632.

It is an arithmetic number, because the mean of its divisors is an integer number (600580632).

Almost surely, 2^1201161263 is an apocalyptic number.

1201161263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201161263 is an equidigital number, since it uses as much as digits as its factorization.

1201161263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1201161263 is about 34657.7734859007. The cubic root of 1201161263 is about 1063.0012436905.

Adding to 1201161263 its reverse (3621611021), we get a palindrome (4822772284).

The spelling of 1201161263 in words is "one billion, two hundred one million, one hundred sixty-one thousand, two hundred sixty-three".