2045131541 has 4 divisors (see below), whose sum is σ = 2045248812. Its totient is φ = 2045014272.

The previous prime is 2045131507. The next prime is 2045131547. The reversal of 2045131541 is 1451315402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 770284516 + 1274847025 = 27754^2 + 35705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045131541 - 2⁶ = 2045131477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2045131541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045131547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26666 + ... + 69291.

It is an arithmetic number, because the mean of its divisors is an integer number (511312203).

Almost surely, 2^2045131541 is an apocalyptic number.

It is an amenable number.

2045131541 is a deficient number, since it is larger than the sum of its proper divisors (117271).

2045131541 is an equidigital number, since it uses as much as digits as its factorization.

2045131541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117270.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2045131541 is about 45223.1305970739. The cubic root of 2045131541 is about 1269.3276746031.

Adding to 2045131541 its reverse (1451315402), we get a palindrome (3496446943).

The spelling of 2045131541 in words is "two billion, forty-five million, one hundred thirty-one thousand, five hundred forty-one".