137913805 has 8 divisors (see below), whose sum is σ = 167967072. Its totient is φ = 108684048.

The previous prime is 137913803. The next prime is 137913833. The reversal of 137913805 is 508319731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137913805 - 2¹ = 137913803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137913803) 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, 205507 + ... + 206176.

It is an arithmetic number, because the mean of its divisors is an integer number (20995884).

Almost surely, 2^137913805 is an apocalyptic number.

It is an amenable number.

137913805 is a deficient number, since it is larger than the sum of its proper divisors (30053267).

137913805 is an equidigital number, since it uses as much as digits as its factorization.

137913805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411755.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 137913805 is about 11743.6708485890. The cubic root of 137913805 is about 516.6573121211.

The spelling of 137913805 in words is "one hundred thirty-seven million, nine hundred thirteen thousand, eight hundred five".