137373881 has 8 divisors (see below), whose sum is σ = 140387520.
Its totient is φ = 134392752.
The previous prime is 137373877. The next prime is 137373883. The reversal of 137373881 is 188373731.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 137373881 - 22 = 137373877 is a prime.
It is a super-2 number, since 2×1373738812 = 37743166362004322, which contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (137373883) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515 + ... + 16583.
It is an arithmetic number, because the mean of its divisors is an integer number (17548440).
Almost surely, 2137373881 is an apocalyptic number.
It is an amenable number.
137373881 is a deficient number, since it is larger than the sum of its proper divisors (3013639).
137373881 is a wasteful number, since it uses less digits than its factorization.
137373881 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16255.
The product of its digits is 84672, while the sum is 41.
The square root of 137373881 is about 11720.6604336104.
The cubic root of 137373881 is about 515.9822032301.
The spelling of 137373881 in words is "one hundred thirty-seven million, three hundred seventy-three thousand, eight hundred eighty-one".