137840453 has 2 divisors, whose sum is σ = 137840454. Its totient is φ = 137840452.

The previous prime is 137840411. The next prime is 137840467. The reversal of 137840453 is 354048731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127193284 + 10647169 = 11278^2 + 3263^2 .

It is an emirp because it is prime and its reverse (354048731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137840453 - 2²⁶ = 70731589 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137840653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68920226 + 68920227.

It is an arithmetic number, because the mean of its divisors is an integer number (68920227).

Almost surely, 2^137840453 is an apocalyptic number.

It is an amenable number.

137840453 is a deficient number, since it is larger than the sum of its proper divisors (1).

137840453 is an equidigital number, since it uses as much as digits as its factorization.

137840453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 137840453 is about 11740.5473892830. The cubic root of 137840453 is about 516.5656979711.

The spelling of 137840453 in words is "one hundred thirty-seven million, eight hundred forty thousand, four hundred fifty-three".