2003045100 has 72 divisors (see below), whose sum is σ = 6623409408. Its totient is φ = 457838400.

The previous prime is 2003045089. The next prime is 2003045101. The reversal of 2003045100 is 15403002.

2003045100 is digitally balanced in base 4 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2003045100.

It is not an unprimeable number, because it can be changed into a prime (2003045101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474816 + ... + 479015.

Almost surely, 2^2003045100 is an apocalyptic number.

2003045100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003045100 is an abundant number, since it is smaller than the sum of its proper divisors (4620364308).

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

2003045100 is a wasteful number, since it uses less digits than its factorization.

2003045100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953855 (or 953848 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2003045100 is about 44755.3918539431. The cubic root of 2003045100 is about 1260.5601565787.

Adding to 2003045100 its reverse (15403002), we get a palindrome (2018448102).

The spelling of 2003045100 in words is "two billion, three million, forty-five thousand, one hundred".