2045205450 has 60 divisors (see below), whose sum is σ = 5682652470. Its totient is φ = 545387040.

The previous prime is 2045205433. The next prime is 2045205469. The reversal of 2045205450 is 545025402.

2045205450 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 205 + 450 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 861363801 + 1183841649 = 29349^2 + 34407^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 248445 + ... + 256544.

Almost surely, 2^2045205450 is an apocalyptic number.

2045205450 is an abundant number, since it is smaller than the sum of its proper divisors (3637447020).

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

2045205450 is a wasteful number, since it uses less digits than its factorization.

2045205450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505013 (or 504999 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 2045205450 is about 45223.9477489527. The cubic root of 2045205450 is about 1269.3429651614.

The spelling of 2045205450 in words is "two billion, forty-five million, two hundred five thousand, four hundred fifty".