1201304538 has 24 divisors (see below), whose sum is σ = 2974659168. Its totient is φ = 343229832.

The previous prime is 1201304521. The next prime is 1201304543. The reversal of 1201304538 is 8354031021.

It is a happy number.

1201304538 is a `hidden beast` number, since 1 + 201 + 3 + 0 + 453 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4766956 + ... + 4767207.

It is an arithmetic number, because the mean of its divisors is an integer number (123944132).

Almost surely, 2^1201304538 is an apocalyptic number.

1201304538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1201304538 is an abundant number, since it is smaller than the sum of its proper divisors (1773354630).

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

1201304538 is a wasteful number, since it uses less digits than its factorization.

1201304538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9534178 (or 9534175 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1201304538 is about 34659.8404208675. The cubic root of 1201304538 is about 1063.0435070825.

Adding to 1201304538 its reverse (8354031021), we get a palindrome (9555335559).

The spelling of 1201304538 in words is "one billion, two hundred one million, three hundred four thousand, five hundred thirty-eight".