3541413721 has 4 divisors (see below), whose sum is σ = 3564866944. Its totient is φ = 3517960500.

The previous prime is 3541413683. The next prime is 3541413749. The reversal of 3541413721 is 1273141453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1273141453 = 12037 ⋅105769.

It is a cyclic number.

It is not a de Polignac number, because 3541413721 - 2⁹ = 3541413209 is a prime.

It is a super-2 number, since 2×3541413721² = 25083222286574131682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3541411721) 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, 11726385 + ... + 11726686.

It is an arithmetic number, because the mean of its divisors is an integer number (891216736).

Almost surely, 2^3541413721 is an apocalyptic number.

It is an amenable number.

3541413721 is a deficient number, since it is larger than the sum of its proper divisors (23453223).

3541413721 is a wasteful number, since it uses less digits than its factorization.

3541413721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23453222.

The product of its digits is 10080, while the sum is 31.

The square root of 3541413721 is about 59509.7783645680. The cubic root of 3541413721 is about 1524.2594230552.

The spelling of 3541413721 in words is "three billion, five hundred forty-one million, four hundred thirteen thousand, seven hundred twenty-one".