1204708109 has 4 divisors (see below), whose sum is σ = 1314227040. Its totient is φ = 1095189180.

The previous prime is 1204708069. The next prime is 1204708121. The reversal of 1204708109 is 9018074021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9018074021 = 11 ⋅819824911.

It is a cyclic number.

It is not a de Polignac number, because 1204708109 - 2¹⁶ = 1204642573 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 (1204708189) 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, 54759449 + ... + 54759470.

It is an arithmetic number, because the mean of its divisors is an integer number (328556760).

Almost surely, 2^1204708109 is an apocalyptic number.

It is an amenable number.

1204708109 is a deficient number, since it is larger than the sum of its proper divisors (109518931).

1204708109 is a wasteful number, since it uses less digits than its factorization.

1204708109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109518930.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1204708109 is about 34708.9053270195. The cubic root of 1204708109 is about 1064.0465090403.

The spelling of 1204708109 in words is "one billion, two hundred four million, seven hundred eight thousand, one hundred nine".