1204640398903 has 4 divisors (see below), whose sum is σ = 1237198247560. Its totient is φ = 1172082550248.

The previous prime is 1204640398849. The next prime is 1204640398967. The reversal of 1204640398903 is 3098930464021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204640398903 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 (1204640308903) 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, 16278924273 + ... + 16278924346.

It is an arithmetic number, because the mean of its divisors is an integer number (309299561890).

Almost surely, 2^{1204640398903} is an apocalyptic number.

1204640398903 is a deficient number, since it is larger than the sum of its proper divisors (32557848657).

1204640398903 is an equidigital number, since it uses as much as digits as its factorization.

1204640398903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32557848656.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 1204640398903 in words is "one trillion, two hundred four billion, six hundred forty million, three hundred ninety-eight thousand, nine hundred three".