203138393496 has 32 divisors (see below), whose sum is σ = 508051157040. Its totient is φ = 67685441408.

The previous prime is 203138393473. The next prime is 203138393533. The reversal of 203138393496 is 694393831302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1649091 + ... + 1767986.

Almost surely, 2^203138393496 is an apocalyptic number.

It is an amenable number.

203138393496 is an abundant number, since it is smaller than the sum of its proper divisors (304912763544).

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

203138393496 is a wasteful number, since it uses less digits than its factorization.

203138393496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419563 (or 3419559 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 51.

The spelling of 203138393496 in words is "two hundred three billion, one hundred thirty-eight million, three hundred ninety-three thousand, four hundred ninety-six".