369220587138 has 162 divisors, whose sum is σ = 907443235881. Its totient is φ = 108440066592.

The previous prime is 369220587137. The next prime is 369220587143. The reversal of 369220587138 is 831785022963.

369220587138 is a `hidden beast` number, since 3 + 6 + 9 + 2 + 20 + 587 + 1 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 315694525689 + 53526061449 = 561867^2 + 231357^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=429663.

It is not an unprimeable number, because it can be changed into a prime (369220587137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 770815183 + ... + 770815661.

Almost surely, 2^369220587138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 369220587138

369220587138 is an abundant number, since it is smaller than the sum of its proper divisors (538222648743).

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

369220587138 is a wasteful number, since it uses less digits than its factorization.

369220587138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 369220587138 in words is "three hundred sixty-nine billion, two hundred twenty million, five hundred eighty-seven thousand, one hundred thirty-eight".