1234345676789 has 2 divisors, whose sum is σ = 1234345676790. Its totient is φ = 1234345676788.

The previous prime is 1234345676749. The next prime is 1234345676807. The reversal of 1234345676789 is 9876765434321.

1234345676789 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096715806564 + 137629870225 = 1047242^2 + 370985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234345676789 - 2²⁸ = 1234077241333 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234345676749) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617172838394 + 617172838395.

It is an arithmetic number, because the mean of its divisors is an integer number (617172838395).

Almost surely, 2^{1234345676789} is an apocalyptic number.

It is an amenable number.

1234345676789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234345676789 is an equidigital number, since it uses as much as digits as its factorization.

1234345676789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 65.

The spelling of 1234345676789 in words is "one trillion, two hundred thirty-four billion, three hundred forty-five million, six hundred seventy-six thousand, seven hundred eighty-nine".