138416835 has 16 divisors (see below), whose sum is σ = 221706144. Its totient is φ = 73742592.

The previous prime is 138416819. The next prime is 138416849. The reversal of 138416835 is 538614831.

It is not a de Polignac number, because 138416835 - 2⁴ = 138416819 is a prime.

It is a super-2 number, since 2×138416835² = 38318440422834450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138416793 and 138416802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11029 + ... + 19961.

It is an arithmetic number, because the mean of its divisors is an integer number (13856634).

Almost surely, 2^138416835 is an apocalyptic number.

138416835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138416835 is a deficient number, since it is larger than the sum of its proper divisors (83289309).

138416835 is a wasteful number, since it uses less digits than its factorization.

138416835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9974.

The product of its digits is 69120, while the sum is 39.

The square root of 138416835 is about 11765.0684230904. The cubic root of 138416835 is about 517.2847058887.

The spelling of 138416835 in words is "one hundred thirty-eight million, four hundred sixteen thousand, eight hundred thirty-five".