137268493 has 2 divisors, whose sum is σ = 137268494. Its totient is φ = 137268492.

The previous prime is 137268487. The next prime is 137268497. The reversal of 137268493 is 394862731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115197289 + 22071204 = 10733^2 + 4698^2 .

It is a cyclic number.

It is not a de Polignac number, because 137268493 - 2⁹ = 137267981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137268497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68634246 + 68634247.

It is an arithmetic number, because the mean of its divisors is an integer number (68634247).

Almost surely, 2^137268493 is an apocalyptic number.

It is an amenable number.

137268493 is a deficient number, since it is larger than the sum of its proper divisors (1).

137268493 is an equidigital number, since it uses as much as digits as its factorization.

137268493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 137268493 is about 11716.1637492824. The cubic root of 137268493 is about 515.8502221878.

The spelling of 137268493 in words is "one hundred thirty-seven million, two hundred sixty-eight thousand, four hundred ninety-three".