2100453540 has 24 divisors (see below), whose sum is σ = 5881270080. Its totient is φ = 560120928.

The previous prime is 2100453539. The next prime is 2100453583. The reversal of 2100453540 is 453540012.

It is a self number, because there is not a number n which added to its sum of digits gives 2100453540.

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, 17503720 + ... + 17503839.

It is an arithmetic number, because the mean of its divisors is an integer number (245052920).

Almost surely, 2^2100453540 is an apocalyptic number.

2100453540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100453540 is an abundant number, since it is smaller than the sum of its proper divisors (3780816540).

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

2100453540 is a wasteful number, since it uses less digits than its factorization.

2100453540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35007571 (or 35007569 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2100453540 is about 45830.7052094990. The cubic root of 2100453540 is about 1280.6713478554.

Adding to 2100453540 its reverse (453540012), we get a palindrome (2553993552).

The spelling of 2100453540 in words is "two billion, one hundred million, four hundred fifty-three thousand, five hundred forty".