137978716 has 24 divisors (see below), whose sum is σ = 247094064. Its totient is φ = 67392000.

The previous prime is 137978713. The next prime is 137978759. The reversal of 137978716 is 617879731.

It is a self number, because there is not a number n which added to its sum of digits gives 137978716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137978713) 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 7 ways as a sum of consecutive naturals, for example, 51916 + ... + 54508.

It is an arithmetic number, because the mean of its divisors is an integer number (10295586).

Almost surely, 2^137978716 is an apocalyptic number.

It is an amenable number.

137978716 is a deficient number, since it is larger than the sum of its proper divisors (109115348).

137978716 is a wasteful number, since it uses less digits than its factorization.

137978716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901 (or 2899 counting only the distinct ones).

The product of its digits is 444528, while the sum is 49.

The square root of 137978716 is about 11746.4341823381. The cubic root of 137978716 is about 516.7383566611.

The spelling of 137978716 in words is "one hundred thirty-seven million, nine hundred seventy-eight thousand, seven hundred sixteen".