1128400067 has 2 divisors, whose sum is σ = 1128400068. Its totient is φ = 1128400066.

The previous prime is 1128400061. The next prime is 1128400081. The reversal of 1128400067 is 7600048211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128400067 - 2⁶ = 1128400003 is a prime.

It is a super-2 number, since 2×1128400067² = 2546573422411208978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1128400061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564200033 + 564200034.

It is an arithmetic number, because the mean of its divisors is an integer number (564200034).

Almost surely, 2^1128400067 is an apocalyptic number.

1128400067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128400067 is an equidigital number, since it uses as much as digits as its factorization.

1128400067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1128400067 is about 33591.6666302820. Note that the first 4 decimals coincide. The cubic root of 1128400067 is about 1041.0886243185.

Adding to 1128400067 its reverse (7600048211), we get a palindrome (8728448278).

The spelling of 1128400067 in words is "one billion, one hundred twenty-eight million, four hundred thousand, sixty-seven".