3531438549491 has 2 divisors, whose sum is σ = 3531438549492. Its totient is φ = 3531438549490.

The previous prime is 3531438549487. The next prime is 3531438549521. The reversal of 3531438549491 is 1949458341353.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3531438549491 - 2² = 3531438549487 is a prime.

It is a super-3 number, since 3×3531438549491³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3531438549491.

It is not a weakly prime, because it can be changed into another prime (3531438549421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765719274745 + 1765719274746.

It is an arithmetic number, because the mean of its divisors is an integer number (1765719274746).

Almost surely, 2^{3531438549491} is an apocalyptic number.

3531438549491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531438549491 is an equidigital number, since it uses as much as digits as its factorization.

3531438549491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 59.

The spelling of 3531438549491 in words is "three trillion, five hundred thirty-one billion, four hundred thirty-eight million, five hundred forty-nine thousand, four hundred ninety-one".