137643263 has 2 divisors, whose sum is σ = 137643264. Its totient is φ = 137643262.

The previous prime is 137643257. The next prime is 137643281. The reversal of 137643263 is 362346731.

137643263 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 137643263 - 2⁶ = 137643199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137643223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68821631 + 68821632.

It is an arithmetic number, because the mean of its divisors is an integer number (68821632).

Almost surely, 2^137643263 is an apocalyptic number.

137643263 is a deficient number, since it is larger than the sum of its proper divisors (1).

137643263 is an equidigital number, since it uses as much as digits as its factorization.

137643263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 35.

The square root of 137643263 is about 11732.1465640351. The cubic root of 137643263 is about 516.3192531390.

Adding to 137643263 its reverse (362346731), we get a palindrome (499989994).

The spelling of 137643263 in words is "one hundred thirty-seven million, six hundred forty-three thousand, two hundred sixty-three".