1268895453 has 32 divisors (see below), whose sum is σ = 2049500160. Its totient is φ = 681696000.

The previous prime is 1268895443. The next prime is 1268895479. The reversal of 1268895453 is 3545988621.

It is not a de Polignac number, because 1268895453 - 2⁴ = 1268895437 is a prime.

It is a super-2 number, since 2×1268895453² = 3220191341288150418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1268895396 and 1268895405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268895403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562578 + ... + 564828.

It is an arithmetic number, because the mean of its divisors is an integer number (64046880).

Almost surely, 2^1268895453 is an apocalyptic number.

It is an amenable number.

1268895453 is a deficient number, since it is larger than the sum of its proper divisors (780604707).

1268895453 is a wasteful number, since it uses less digits than its factorization.

1268895453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857.

The product of its digits is 2073600, while the sum is 51.

The square root of 1268895453 is about 35621.5588232744. The cubic root of 1268895453 is about 1082.6180917877.

The spelling of 1268895453 in words is "one billion, two hundred sixty-eight million, eight hundred ninety-five thousand, four hundred fifty-three".