1204201138 has 64 divisors (see below), whose sum is σ = 2182348800. Its totient is φ = 487555200.

The previous prime is 1204201127. The next prime is 1204201139. The reversal of 1204201138 is 8311024021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1204201139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6051163 + ... + 6051361.

It is an arithmetic number, because the mean of its divisors is an integer number (34099200).

Almost surely, 2^1204201138 is an apocalyptic number.

1204201138 is a deficient number, since it is larger than the sum of its proper divisors (978147662).

1204201138 is a wasteful number, since it uses less digits than its factorization.

1204201138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1204201138 is about 34701.6013751527. The cubic root of 1204201138 is about 1063.8972290594.

Adding to 1204201138 its reverse (8311024021), we get a palindrome (9515225159).

The spelling of 1204201138 in words is "one billion, two hundred four million, two hundred one thousand, one hundred thirty-eight".