2045455400 has 24 divisors (see below), whose sum is σ = 4755684270. Its totient is φ = 818182080.

The previous prime is 2045455387. The next prime is 2045455421. The reversal of 2045455400 is 45545402.

It can be written as a sum of positive squares in 3 ways, for example, as 1636526116 + 408929284 = 40454^2 + 20222^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5113439 + ... + 5113838.

Almost surely, 2^2045455400 is an apocalyptic number.

2045455400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045455400 is an abundant number, since it is smaller than the sum of its proper divisors (2710228870).

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

2045455400 is a wasteful number, since it uses less digits than its factorization.

2045455400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10227293 (or 10227284 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 2045455400 is about 45226.7111340190. The cubic root of 2045455400 is about 1269.3946729821.

The spelling of 2045455400 in words is "two billion, forty-five million, four hundred fifty-five thousand, four hundred".