137748907 has 2 divisors, whose sum is σ = 137748908. Its totient is φ = 137748906.

The previous prime is 137748887. The next prime is 137748953. The reversal of 137748907 is 709847731.

137748907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (137748953) can be obtained adding 137748907 to its sum of digits (46).

It is a weak prime.

It is an emirp because it is prime and its reverse (709847731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137748907 - 2¹¹ = 137746859 is a prime.

It is a super-2 number, since 2×137748907² = 37949522759389298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137748997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68874453 + 68874454.

It is an arithmetic number, because the mean of its divisors is an integer number (68874454).

Almost surely, 2^137748907 is an apocalyptic number.

137748907 is a deficient number, since it is larger than the sum of its proper divisors (1).

137748907 is an equidigital number, since it uses as much as digits as its factorization.

137748907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 137748907 is about 11736.6480308476. The cubic root of 137748907 is about 516.4513145294.

The spelling of 137748907 in words is "one hundred thirty-seven million, seven hundred forty-eight thousand, nine hundred seven".