203630945402 has 16 divisors (see below), whose sum is σ = 334566057960. Its totient is φ = 92521970688.

The previous prime is 203630945393. The next prime is 203630945407. The reversal of 203630945402 is 204549036302.

It can be written as a sum of positive squares in 4 ways, for example, as 203625660001 + 5285401 = 451249^2 + 2299^2 .

It is not an unprimeable number, because it can be changed into a prime (203630945407) 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, 103260143 + ... + 103262114.

Almost surely, 2^203630945402 is an apocalyptic number.

203630945402 is a deficient number, since it is larger than the sum of its proper divisors (130935112558).

203630945402 is a wasteful number, since it uses less digits than its factorization.

203630945402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206522305.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 203630945402 in words is "two hundred three billion, six hundred thirty million, nine hundred forty-five thousand, four hundred two".