136146438 has 48 divisors (see below), whose sum is σ = 328788720. Its totient is φ = 40462848.

The previous prime is 136146433. The next prime is 136146463. The reversal of 136146438 is 834641631.

It is a happy number.

136146438 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 4 + 643 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136146433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5895 + ... + 17522.

It is an arithmetic number, because the mean of its divisors is an integer number (6849765).

Almost surely, 2^136146438 is an apocalyptic number.

136146438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

136146438 is an abundant number, since it is smaller than the sum of its proper divisors (192642282).

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

136146438 is a wasteful number, since it uses less digits than its factorization.

136146438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23461 (or 23458 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 136146438 is about 11668.1805779650. The cubic root of 136146438 is about 514.4408270877.

The spelling of 136146438 in words is "one hundred thirty-six million, one hundred forty-six thousand, four hundred thirty-eight".