1268153608 has 16 divisors (see below), whose sum is σ = 2378212560. Its totient is φ = 633963600.

The previous prime is 1268153581. The next prime is 1268153609. The reversal of 1268153608 is 8063518621.

It is not an unprimeable number, because it can be changed into a prime (1268153609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51223 + ... + 71833.

It is an arithmetic number, because the mean of its divisors is an integer number (148638285).

Almost surely, 2^1268153608 is an apocalyptic number.

It is an amenable number.

1268153608 is a deficient number, since it is larger than the sum of its proper divisors (1110058952).

1268153608 is a wasteful number, since it uses less digits than its factorization.

1268153608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28308 (or 28304 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1268153608 is about 35611.1444354152. The cubic root of 1268153608 is about 1082.4070706245.

The spelling of 1268153608 in words is "one billion, two hundred sixty-eight million, one hundred fifty-three thousand, six hundred eight".