1268892047 has 2 divisors, whose sum is σ = 1268892048. Its totient is φ = 1268892046.

The previous prime is 1268892043. The next prime is 1268892073. The reversal of 1268892047 is 7402988621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1268892047 - 2² = 1268892043 is a prime.

It is a super-2 number, since 2×1268892047² = 3220174053879700418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1268891992 and 1268892010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268892043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634446023 + 634446024.

It is an arithmetic number, because the mean of its divisors is an integer number (634446024).

Almost surely, 2^1268892047 is an apocalyptic number.

1268892047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268892047 is an equidigital number, since it uses as much as digits as its factorization.

1268892047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1268892047 is about 35621.5110151156. The cubic root of 1268892047 is about 1082.6171231236.

The spelling of 1268892047 in words is "one billion, two hundred sixty-eight million, eight hundred ninety-two thousand, forty-seven".