1268612253 has 16 divisors (see below), whose sum is σ = 1893777600. Its totient is φ = 839283120.

The previous prime is 1268612231. The next prime is 1268612263. The reversal of 1268612253 is 3522168621.

1268612253 is a `hidden beast` number, since 12 + 6 + 8 + 612 + 25 + 3 = 666.

It is not a de Polignac number, because 1268612253 - 2⁸ = 1268611997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268612263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175798 + ... + 182871.

It is an arithmetic number, because the mean of its divisors is an integer number (118361100).

Almost surely, 2^1268612253 is an apocalyptic number.

It is an amenable number.

1268612253 is a deficient number, since it is larger than the sum of its proper divisors (625165347).

1268612253 is a wasteful number, since it uses less digits than its factorization.

1268612253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358809 (or 358803 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1268612253 is about 35617.5834806350. The cubic root of 1268612253 is about 1082.5375439761.

The spelling of 1268612253 in words is "one billion, two hundred sixty-eight million, six hundred twelve thousand, two hundred fifty-three".