138147810 has 16 divisors (see below), whose sum is σ = 331554816. Its totient is φ = 36839408.

The previous prime is 138147809. The next prime is 138147829. The reversal of 138147810 is 18741831.

It is a super-2 number, since 2×138147810² = 38169634815592200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302434 + ... + 2302493.

It is an arithmetic number, because the mean of its divisors is an integer number (20722176).

Almost surely, 2^138147810 is an apocalyptic number.

138147810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138147810 is an abundant number, since it is smaller than the sum of its proper divisors (193407006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138147810 is a wasteful number, since it uses less digits than its factorization.

138147810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604937.

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

The square root of 138147810 is about 11753.6296521543. The cubic root of 138147810 is about 516.9493594607.

The spelling of 138147810 in words is "one hundred thirty-eight million, one hundred forty-seven thousand, eight hundred ten".