137797811 has 2 divisors, whose sum is σ = 137797812. Its totient is φ = 137797810.

The previous prime is 137797783. The next prime is 137797813. The reversal of 137797811 is 118797731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137797811 is a prime.

Together with 137797813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137797813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68898905 + 68898906.

It is an arithmetic number, because the mean of its divisors is an integer number (68898906).

Almost surely, 2^137797811 is an apocalyptic number.

137797811 is a deficient number, since it is larger than the sum of its proper divisors (1).

137797811 is an equidigital number, since it uses as much as digits as its factorization.

137797811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 44.

The square root of 137797811 is about 11738.7312346778. The cubic root of 137797811 is about 516.5124246254.

The spelling of 137797811 in words is "one hundred thirty-seven million, seven hundred ninety-seven thousand, eight hundred eleven".