1263209996 has 12 divisors (see below), whose sum is σ = 2212732200. Its totient is φ = 631000800.

The previous prime is 1263209989. The next prime is 1263210049. The reversal of 1263209996 is 6999023621.

It is a self number, because there is not a number n which added to its sum of digits gives 1263209996.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146330 + ... + 154721.

It is an arithmetic number, because the mean of its divisors is an integer number (184394350).

Almost surely, 2^1263209996 is an apocalyptic number.

It is an amenable number.

1263209996 is a deficient number, since it is larger than the sum of its proper divisors (949522204).

1263209996 is a wasteful number, since it uses less digits than its factorization.

1263209996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302104 (or 302102 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 1263209996 is about 35541.6656334506. The cubic root of 1263209996 is about 1080.9987320573.

The spelling of 1263209996 in words is "one billion, two hundred sixty-three million, two hundred nine thousand, nine hundred ninety-six".