1263009668 has 6 divisors (see below), whose sum is σ = 2210266926. Its totient is φ = 631504832.

The previous prime is 1263009659. The next prime is 1263009707. The reversal of 1263009668 is 8669003621.

It can be written as a sum of positive squares in only one way, i.e., 1262238784 + 770884 = 35528^2 + 878^2 .

It is a super-2 number, since 2×1263009668² = 3190386842922940448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157876205 + ... + 157876212.

It is an arithmetic number, because the mean of its divisors is an integer number (368377821).

Almost surely, 2^1263009668 is an apocalyptic number.

It is an amenable number.

1263009668 is a deficient number, since it is larger than the sum of its proper divisors (947257258).

1263009668 is a wasteful number, since it uses less digits than its factorization.

1263009668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315752421 (or 315752419 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1263009668 is about 35538.8473082625. The cubic root of 1263009668 is about 1080.9415851160.

The spelling of 1263009668 in words is "one billion, two hundred sixty-three million, nine thousand, six hundred sixty-eight".