137819217 has 16 divisors (see below), whose sum is σ = 193679360. Its totient is φ = 86931792.

The previous prime is 137819173. The next prime is 137819233. The reversal of 137819217 is 712918731.

It is not a de Polignac number, because 137819217 - 2¹⁰ = 137818193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137819417) 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 15 ways as a sum of consecutive naturals, for example, 87168 + ... + 88734.

It is an arithmetic number, because the mean of its divisors is an integer number (12104960).

Almost surely, 2^137819217 is an apocalyptic number.

It is an amenable number.

137819217 is a deficient number, since it is larger than the sum of its proper divisors (55860143).

137819217 is a wasteful number, since it uses less digits than its factorization.

137819217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132.

The product of its digits is 21168, while the sum is 39.

The square root of 137819217 is about 11739.6429673138. The cubic root of 137819217 is about 516.5391688637.

The spelling of 137819217 in words is "one hundred thirty-seven million, eight hundred nineteen thousand, two hundred seventeen".