1346778253 has 2 divisors, whose sum is σ = 1346778254. Its totient is φ = 1346778252.

The previous prime is 1346778247. The next prime is 1346778259. The reversal of 1346778253 is 3528776431.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1346778247) and next prime (1346778259).

It can be written as a sum of positive squares in only one way, i.e., 1228011849 + 118766404 = 35043^2 + 10898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1346778253 - 2⁵ = 1346778221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1346778259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673389126 + 673389127.

It is an arithmetic number, because the mean of its divisors is an integer number (673389127).

Almost surely, 2^1346778253 is an apocalyptic number.

It is an amenable number.

1346778253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346778253 is an equidigital number, since it uses as much as digits as its factorization.

1346778253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 1346778253 is about 36698.4775297287. The cubic root of 1346778253 is about 1104.3295628004.

The spelling of 1346778253 in words is "one billion, three hundred forty-six million, seven hundred seventy-eight thousand, two hundred fifty-three".