2658657541 has 4 divisors (see below), whose sum is σ = 2659969900. Its totient is φ = 2657345184.

The previous prime is 2658657539. The next prime is 2658657553. The reversal of 2658657541 is 1457568562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1947368641 + 711288900 = 44129^2 + 26670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658657541 - 2¹ = 2658657539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658657571) 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, 653136 + ... + 657193.

It is an arithmetic number, because the mean of its divisors is an integer number (664992475).

Almost surely, 2^2658657541 is an apocalyptic number.

It is an amenable number.

2658657541 is a deficient number, since it is larger than the sum of its proper divisors (1312359).

2658657541 is a wasteful number, since it uses less digits than its factorization.

2658657541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312358.

The product of its digits is 2016000, while the sum is 49.

The square root of 2658657541 is about 51562.1716086512. The cubic root of 2658657541 is about 1385.3328520948.

The spelling of 2658657541 in words is "two billion, six hundred fifty-eight million, six hundred fifty-seven thousand, five hundred forty-one".