137381865 has 8 divisors (see below), whose sum is σ = 219811008. Its totient is φ = 73270320.

The previous prime is 137381813. The next prime is 137381887. The reversal of 137381865 is 568183731.

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

It is not a de Polignac number, because 137381865 - 2¹² = 137377769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4579381 + ... + 4579410.

It is an arithmetic number, because the mean of its divisors is an integer number (27476376).

Almost surely, 2^137381865 is an apocalyptic number.

137381865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137381865 is a deficient number, since it is larger than the sum of its proper divisors (82429143).

137381865 is an equidigital number, since it uses as much as digits as its factorization.

137381865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9158799.

The product of its digits is 120960, while the sum is 42.

The square root of 137381865 is about 11721.0010238034. The cubic root of 137381865 is about 515.9921991189.

It can be divided in two parts, 1373 and 81865, that added together give a palindrome (83238).

The spelling of 137381865 in words is "one hundred thirty-seven million, three hundred eighty-one thousand, eight hundred sixty-five".