1263166045 has 8 divisors (see below), whose sum is σ = 1604964024. Its totient is φ = 951089664.

The previous prime is 1263166043. The next prime is 1263166057. The reversal of 1263166045 is 5406613621.

It can be written as a sum of positive squares in 4 ways, for example, as 30173049 + 1232992996 = 5493^2 + 35114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1263166045 - 2¹ = 1263166043 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 1263166045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263166043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7430304 + ... + 7430473.

It is an arithmetic number, because the mean of its divisors is an integer number (200620503).

Almost surely, 2^1263166045 is an apocalyptic number.

It is an amenable number.

1263166045 is a deficient number, since it is larger than the sum of its proper divisors (341797979).

1263166045 is a wasteful number, since it uses less digits than its factorization.

1263166045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14860799.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1263166045 is about 35541.0473255924. The cubic root of 1263166045 is about 1080.9861948105.

Adding to 1263166045 its reverse (5406613621), we get a palindrome (6669779666).

The spelling of 1263166045 in words is "one billion, two hundred sixty-three million, one hundred sixty-six thousand, forty-five".