137891783 has 2 divisors, whose sum is σ = 137891784. Its totient is φ = 137891782.

The previous prime is 137891771. The next prime is 137891833. The reversal of 137891783 is 387198731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137891783 - 2¹⁴ = 137875399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137891713) 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, 68945891 + 68945892.

It is an arithmetic number, because the mean of its divisors is an integer number (68945892).

Almost surely, 2^137891783 is an apocalyptic number.

137891783 is a deficient number, since it is larger than the sum of its proper divisors (1).

137891783 is an equidigital number, since it uses as much as digits as its factorization.

137891783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 47.

The square root of 137891783 is about 11742.7331997282. The cubic root of 137891783 is about 516.6298108061.

The spelling of 137891783 in words is "one hundred thirty-seven million, eight hundred ninety-one thousand, seven hundred eighty-three".