3540437261 has 4 divisors (see below), whose sum is σ = 3546910272. Its totient is φ = 3533964252.

The previous prime is 3540437233. The next prime is 3540437267. The reversal of 3540437261 is 1627340453.

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: 1627340453 = 17 ⋅95725909.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3540437261 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 (3540437267) 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, 3235685 + ... + 3236778.

It is an arithmetic number, because the mean of its divisors is an integer number (886727568).

Almost surely, 2^3540437261 is an apocalyptic number.

It is an amenable number.

3540437261 is a deficient number, since it is larger than the sum of its proper divisors (6473011).

3540437261 is an equidigital number, since it uses as much as digits as its factorization.

3540437261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473010.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 3540437261 is about 59501.5736010402. The cubic root of 3540437261 is about 1524.1193175032.

The spelling of 3540437261 in words is "three billion, five hundred forty million, four hundred thirty-seven thousand, two hundred sixty-one".