137836849 has 4 divisors (see below), whose sum is σ = 145091440. Its totient is φ = 130582260.

The previous prime is 137836847. The next prime is 137836859. The reversal of 137836849 is 948638731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948638731 = 7331 ⋅129401.

It is a cyclic number.

It is not a de Polignac number, because 137836849 - 2¹ = 137836847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137836841) 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, 3627267 + ... + 3627304.

It is an arithmetic number, because the mean of its divisors is an integer number (36272860).

Almost surely, 2^137836849 is an apocalyptic number.

137836849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

137836849 is a deficient number, since it is larger than the sum of its proper divisors (7254591).

137836849 is an equidigital number, since it uses as much as digits as its factorization.

137836849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7254590.

The product of its digits is 870912, while the sum is 49.

The square root of 137836849 is about 11740.3939031022. The cubic root of 137836849 is about 516.5611958603.

The spelling of 137836849 in words is "one hundred thirty-seven million, eight hundred thirty-six thousand, eight hundred forty-nine".