137777748 has 12 divisors (see below), whose sum is σ = 321481440. Its totient is φ = 45925912.

The previous prime is 137777737. The next prime is 137777771. The reversal of 137777748 is 847777731.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 137777748.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5740728 + ... + 5740751.

It is an arithmetic number, because the mean of its divisors is an integer number (26790120).

Almost surely, 2^137777748 is an apocalyptic number.

It is an amenable number.

137777748 is an abundant number, since it is smaller than the sum of its proper divisors (183703692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137777748 is a wasteful number, since it uses less digits than its factorization.

137777748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11481486 (or 11481484 counting only the distinct ones).

The product of its digits is 1613472, while the sum is 51.

The square root of 137777748 is about 11737.8766393245. The cubic root of 137777748 is about 516.4873557904.

The spelling of 137777748 in words is "one hundred thirty-seven million, seven hundred seventy-seven thousand, seven hundred forty-eight".