137909782 has 4 divisors (see below), whose sum is σ = 206864676. Its totient is φ = 68954890.

The previous prime is 137909753. The next prime is 137909789. The reversal of 137909782 is 287909731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137909789) by changing a digit.

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 as a sum of consecutive naturals, namely, 34477444 + ... + 34477447.

It is an arithmetic number, because the mean of its divisors is an integer number (51716169).

Almost surely, 2^137909782 is an apocalyptic number.

137909782 is a deficient number, since it is larger than the sum of its proper divisors (68954894).

137909782 is an equidigital number, since it uses as much as digits as its factorization.

137909782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68954893.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 137909782 is about 11743.4995635884. The cubic root of 137909782 is about 516.6522883731.

The spelling of 137909782 in words is "one hundred thirty-seven million, nine hundred nine thousand, seven hundred eighty-two".