1204385155 has 8 divisors (see below), whose sum is σ = 1451466432. Its totient is φ = 959371968.

The previous prime is 1204385153. The next prime is 1204385191. The reversal of 1204385155 is 5515834021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1204385155 - 2¹ = 1204385153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1204385155.

It is not an unprimeable number, because it can be changed into a prime (1204385153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515739 + ... + 518068.

It is an arithmetic number, because the mean of its divisors is an integer number (181433304).

Almost surely, 2^1204385155 is an apocalyptic number.

1204385155 is a deficient number, since it is larger than the sum of its proper divisors (247081277).

1204385155 is a wasteful number, since it uses less digits than its factorization.

1204385155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034045.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 1204385155 is about 34704.2526932939. The cubic root of 1204385155 is about 1063.9514185683.

The spelling of 1204385155 in words is "one billion, two hundred four million, three hundred eighty-five thousand, one hundred fifty-five".