2045323140 has 48 divisors (see below), whose sum is σ = 6545035392. Its totient is φ = 467502336.

The previous prime is 2045323129. The next prime is 2045323157. The reversal of 2045323140 is 413235402.

It is a self number, because there is not a number n which added to its sum of digits gives 2045323140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2434489 + ... + 2435328.

It is an arithmetic number, because the mean of its divisors is an integer number (136354904).

Almost surely, 2^2045323140 is an apocalyptic number.

2045323140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045323140 is an abundant number, since it is smaller than the sum of its proper divisors (4499712252).

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

2045323140 is a wasteful number, since it uses less digits than its factorization.

2045323140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869836 (or 4869834 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2045323140 is about 45225.2489213713. The cubic root of 2045323140 is about 1269.3673125292.

Adding to 2045323140 its reverse (413235402), we get a palindrome (2458558542).

The spelling of 2045323140 in words is "two billion, forty-five million, three hundred twenty-three thousand, one hundred forty".