2045413021 has 16 divisors (see below), whose sum is σ = 2260770480. Its totient is φ = 1842324480.

The previous prime is 2045413009. The next prime is 2045413033. The reversal of 2045413021 is 1203145402.

It is an interprime number because it is at equal distance from previous prime (2045413009) and next prime (2045413033).

It can be written as a sum of positive squares in 8 ways, for example, as 1920996 + 2043492025 = 1386^2 + 45205^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045413021 - 2¹¹ = 2045410973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2045412983 and 2045413001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045413001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11715 + ... + 65023.

It is an arithmetic number, because the mean of its divisors is an integer number (141298155).

Almost surely, 2^2045413021 is an apocalyptic number.

It is an amenable number.

2045413021 is a deficient number, since it is larger than the sum of its proper divisors (215357459).

2045413021 is a wasteful number, since it uses less digits than its factorization.

2045413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53424.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2045413021 is about 45226.2426142168. The cubic root of 2045413021 is about 1269.3859062223.

Adding to 2045413021 its reverse (1203145402), we get a palindrome (3248558423).

The spelling of 2045413021 in words is "two billion, forty-five million, four hundred thirteen thousand, twenty-one".