137173819 has 2 divisors, whose sum is σ = 137173820. Its totient is φ = 137173818.

The previous prime is 137173807. The next prime is 137173859. The reversal of 137173819 is 918371731.

137173819 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 (137173859) can be obtained adding 137173819 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (918371731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137173819 - 2⁷ = 137173691 is a prime.

It is a super-2 number, since 2×137173819² = 37633313238089522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137173859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68586909 + 68586910.

It is an arithmetic number, because the mean of its divisors is an integer number (68586910).

Almost surely, 2^137173819 is an apocalyptic number.

137173819 is a deficient number, since it is larger than the sum of its proper divisors (1).

137173819 is an equidigital number, since it uses as much as digits as its factorization.

137173819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 137173819 is about 11712.1227367203. The cubic root of 137173819 is about 515.7316010463.

The spelling of 137173819 in words is "one hundred thirty-seven million, one hundred seventy-three thousand, eight hundred nineteen".