1201263169 has 2 divisors, whose sum is σ = 1201263170. Its totient is φ = 1201263168.

The previous prime is 1201263149. The next prime is 1201263221. The reversal of 1201263169 is 9613621021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 676624144 + 524639025 = 26012^2 + 22905^2 .

It is an emirp because it is prime and its reverse (9613621021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201263169 - 2⁵ = 1201263137 is a prime.

It is a super-2 number, since 2×1201263169² = 2886066402391845122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201263169.

It is not a weakly prime, because it can be changed into another prime (1201263149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600631584 + 600631585.

It is an arithmetic number, because the mean of its divisors is an integer number (600631585).

Almost surely, 2^1201263169 is an apocalyptic number.

It is an amenable number.

1201263169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201263169 is an equidigital number, since it uses as much as digits as its factorization.

1201263169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1201263169 is about 34659.2436299467. The cubic root of 1201263169 is about 1063.0313043617.

The spelling of 1201263169 in words is "one billion, two hundred one million, two hundred sixty-three thousand, one hundred sixty-nine".