137743643 has 2 divisors, whose sum is σ = 137743644. Its totient is φ = 137743642.

The previous prime is 137743631. The next prime is 137743679. The reversal of 137743643 is 346347731.

137743643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137743643 - 2⁸ = 137743387 is a prime.

It is a super-2 number, since 2×137743643² = 37946622373822898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137743597 and 137743606.

It is not a weakly prime, because it can be changed into another prime (137743603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68871821 + 68871822.

It is an arithmetic number, because the mean of its divisors is an integer number (68871822).

Almost surely, 2^137743643 is an apocalyptic number.

137743643 is a deficient number, since it is larger than the sum of its proper divisors (1).

137743643 is an equidigital number, since it uses as much as digits as its factorization.

137743643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 38.

The square root of 137743643 is about 11736.4237738759. The cubic root of 137743643 is about 516.4447358097. Note that the first 3 decimals are identical.

The spelling of 137743643 in words is "one hundred thirty-seven million, seven hundred forty-three thousand, six hundred forty-three".