134643643 has 2 divisors, whose sum is σ = 134643644. Its totient is φ = 134643642.

The previous prime is 134643617. The next prime is 134643647. The reversal of 134643643 is 346346431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134643643 is a prime.

It is a super-2 number, since 2×134643643² = 36257821200622898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134643599 and 134643608.

It is not a weakly prime, because it can be changed into another prime (134643647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67321821 + 67321822.

It is an arithmetic number, because the mean of its divisors is an integer number (67321822).

Almost surely, 2^134643643 is an apocalyptic number.

134643643 is a deficient number, since it is larger than the sum of its proper divisors (1).

134643643 is an equidigital number, since it uses as much as digits as its factorization.

134643643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 34.

The square root of 134643643 is about 11603.6047416309. The cubic root of 134643643 is about 512.5410070698.

The spelling of 134643643 in words is "one hundred thirty-four million, six hundred forty-three thousand, six hundred forty-three".