1204537989 has 4 divisors (see below), whose sum is σ = 1606050656. Its totient is φ = 803025324.

The previous prime is 1204537987. The next prime is 1204538039. The reversal of 1204537989 is 9897354021.

1204537989 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1204537989 - 2¹ = 1204537987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204537987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200756329 + ... + 200756334.

It is an arithmetic number, because the mean of its divisors is an integer number (401512664).

Almost surely, 2^1204537989 is an apocalyptic number.

It is an amenable number.

1204537989 is a deficient number, since it is larger than the sum of its proper divisors (401512667).

1204537989 is an equidigital number, since it uses as much as digits as its factorization.

1204537989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401512666.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1204537989 is about 34706.4545726008. The cubic root of 1204537989 is about 1063.9964210806.

The spelling of 1204537989 in words is "one billion, two hundred four million, five hundred thirty-seven thousand, nine hundred eighty-nine".