436131138 has 8 divisors (see below), whose sum is σ = 872262288. Its totient is φ = 145377044.

The previous prime is 436131133. The next prime is 436131139. The reversal of 436131138 is 831131634.

It is a sphenic number, since it is the product of 3 distinct primes.

436131138 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (436131133) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36344256 + ... + 36344267.

It is an arithmetic number, because the mean of its divisors is an integer number (109032786).

Almost surely, 2^436131138 is an apocalyptic number.

436131138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

436131138 is a wasteful number, since it uses less digits than its factorization.

436131138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72688528.

The product of its digits is 5184, while the sum is 30.

The square root of 436131138 is about 20883.7529673189. The cubic root of 436131138 is about 758.3546688787.

The spelling of 436131138 in words is "four hundred thirty-six million, one hundred thirty-one thousand, one hundred thirty-eight".