2003654538 has 24 divisors (see below), whose sum is σ = 4569739200. Its totient is φ = 632732904.

The previous prime is 2003654537. The next prime is 2003654539. The reversal of 2003654538 is 8354563002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2003654537) and next prime (2003654539).

It is not an unprimeable number, because it can be changed into a prime (2003654537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2928978 + ... + 2929661.

It is an arithmetic number, because the mean of its divisors is an integer number (190405800).

Almost surely, 2^2003654538 is an apocalyptic number.

2003654538 is an abundant number, since it is smaller than the sum of its proper divisors (2566084662).

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

2003654538 is a wasteful number, since it uses less digits than its factorization.

2003654538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5858666 (or 5858663 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2003654538 is about 44762.1998789157. The cubic root of 2003654538 is about 1260.6879878427.

The spelling of 2003654538 in words is "two billion, three million, six hundred fifty-four thousand, five hundred thirty-eight".