138411807 has 16 divisors (see below), whose sum is σ = 201710592. Its totient is φ = 84044160.

The previous prime is 138411803. The next prime is 138411853. The reversal of 138411807 is 708114831.

It is not a de Polignac number, because 138411807 - 2² = 138411803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138411803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42193 + ... + 45354.

It is an arithmetic number, because the mean of its divisors is an integer number (12606912).

Almost surely, 2^138411807 is an apocalyptic number.

138411807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138411807 is a deficient number, since it is larger than the sum of its proper divisors (63298785).

138411807 is a wasteful number, since it uses less digits than its factorization.

138411807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87598.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 138411807 is about 11764.8547377348. The cubic root of 138411807 is about 517.2784423466.

The spelling of 138411807 in words is "one hundred thirty-eight million, four hundred eleven thousand, eight hundred seven".