203973849040 has 40 divisors (see below), whose sum is σ = 510719140008. Its totient is φ = 75313420800.

The previous prime is 203973848989. The next prime is 203973849049. The reversal of 203973849040 is 40948379302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15708110224 + 188265738816 = 125332^2 + 433896^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203973849049) 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, 98063311 + ... + 98065390.

Almost surely, 2^203973849040 is an apocalyptic number.

203973849040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203973849040 is an abundant number, since it is smaller than the sum of its proper divisors (306745290968).

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

203973849040 is a wasteful number, since it uses less digits than its factorization.

203973849040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196128727 (or 196128721 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 203973849040 in words is "two hundred three billion, nine hundred seventy-three million, eight hundred forty-nine thousand, forty".