436881138 has 16 divisors (see below), whose sum is σ = 886804320. Its totient is φ = 143453376.

The previous prime is 436881127. The next prime is 436881149. The reversal of 436881138 is 831188634.

It is an interprime number because it is at equal distance from previous prime (436881127) and next prime (436881149).

It is a self number, because there is not a number n which added to its sum of digits gives 436881138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542983 + ... + 543786.

It is an arithmetic number, because the mean of its divisors is an integer number (55425270).

Almost surely, 2^436881138 is an apocalyptic number.

436881138 is an abundant number, since it is smaller than the sum of its proper divisors (449923182).

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

436881138 is a wasteful number, since it uses less digits than its factorization.

436881138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086841.

The product of its digits is 110592, while the sum is 42.

The square root of 436881138 is about 20901.7017967437. The cubic root of 436881138 is about 758.7891255776.

The spelling of 436881138 in words is "four hundred thirty-six million, eight hundred eighty-one thousand, one hundred thirty-eight".