137811873 has 4 divisors (see below), whose sum is σ = 183749168. Its totient is φ = 91874580.

The previous prime is 137811859. The next prime is 137811889. The reversal of 137811873 is 378118731.

137811873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 378118731 = 3 ⋅126039577.

It is not a de Polignac number, because 137811873 - 2⁹ = 137811361 is a prime.

It is a super-2 number, since 2×137811873² = 37984224679536258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137811823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22968643 + ... + 22968648.

It is an arithmetic number, because the mean of its divisors is an integer number (45937292).

Almost surely, 2^137811873 is an apocalyptic number.

It is an amenable number.

137811873 is a deficient number, since it is larger than the sum of its proper divisors (45937295).

137811873 is an equidigital number, since it uses as much as digits as its factorization.

137811873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45937294.

The product of its digits is 28224, while the sum is 39.

The square root of 137811873 is about 11739.3301768031. The cubic root of 137811873 is about 516.5299937256.

The spelling of 137811873 in words is "one hundred thirty-seven million, eight hundred eleven thousand, eight hundred seventy-three".