1618200838 has 16 divisors (see below), whose sum is σ = 2441327616. Its totient is φ = 804434760.

The previous prime is 1618200799. The next prime is 1618200839. The reversal of 1618200838 is 8380028161.

It is a junction number, because it is equal to n+sod(n) for n = 1618200797 and 1618200806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618200839) by changing a digit.

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, 436573 + ... + 440263.

It is an arithmetic number, because the mean of its divisors is an integer number (152582976).

Almost surely, 2^1618200838 is an apocalyptic number.

1618200838 is a deficient number, since it is larger than the sum of its proper divisors (823126778).

1618200838 is a wasteful number, since it uses less digits than its factorization.

1618200838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1618200838 is about 40226.8671163937. The cubic root of 1618200838 is about 1174.0253485119.

Adding to 1618200838 its reverse (8380028161), we get a palindrome (9998228999).

The spelling of 1618200838 in words is "one billion, six hundred eighteen million, two hundred thousand, eight hundred thirty-eight".