1838365638202 has 4 divisors (see below), whose sum is σ = 2757548457306. Its totient is φ = 919182819100.

The previous prime is 1838365638121. The next prime is 1838365638203. The reversal of 1838365638202 is 2028365638381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1482552195201 + 355813443001 = 1217601^2 + 596501^2 .

It is not an unprimeable number, because it can be changed into a prime (1838365638203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459591409549 + ... + 459591409552.

Almost surely, 2^{1838365638202} is an apocalyptic number.

1838365638202 is a deficient number, since it is larger than the sum of its proper divisors (919182819104).

1838365638202 is an equidigital number, since it uses as much as digits as its factorization.

1838365638202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919182819103.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 1838365638202 in words is "one trillion, eight hundred thirty-eight billion, three hundred sixty-five million, six hundred thirty-eight thousand, two hundred two".