138458410 has 20 divisors (see below), whose sum is σ = 253378890. Its totient is φ = 54475440.

The previous prime is 138458407. The next prime is 138458417. The reversal of 138458410 is 14854831.

138458410 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 83119689 + 55338721 = 9117^2 + 7439^2 .

It is not an unprimeable number, because it can be changed into a prime (138458417) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2269780 + ... + 2269840.

Almost surely, 2^138458410 is an apocalyptic number.

138458410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138458410 is a deficient number, since it is larger than the sum of its proper divisors (114920480).

138458410 is an frugal number, since it uses more digits than its factorization.

138458410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 138458410 is about 11766.8351734865. The cubic root of 138458410 is about 517.3364913978.

The spelling of 138458410 in words is "one hundred thirty-eight million, four hundred fifty-eight thousand, four hundred ten".