137945211 has 4 divisors (see below), whose sum is σ = 183926952. Its totient is φ = 91963472.

The previous prime is 137945209. The next prime is 137945219. The reversal of 137945211 is 112549731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137945211 - 2¹ = 137945209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137945219) 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 in 3 ways as a sum of consecutive naturals, for example, 22990866 + ... + 22990871.

It is an arithmetic number, because the mean of its divisors is an integer number (45981738).

Almost surely, 2^137945211 is an apocalyptic number.

137945211 is a deficient number, since it is larger than the sum of its proper divisors (45981741).

137945211 is an equidigital number, since it uses as much as digits as its factorization.

137945211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45981740.

The product of its digits is 7560, while the sum is 33.

The square root of 137945211 is about 11745.0079182604. The cubic root of 137945211 is about 516.6965272139.

The spelling of 137945211 in words is "one hundred thirty-seven million, nine hundred forty-five thousand, two hundred eleven".