3540812461 has 4 divisors (see below), whose sum is σ = 3547035900. Its totient is φ = 3534589024.

The previous prime is 3540812459. The next prime is 3540812491. The reversal of 3540812461 is 1642180453.

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 345736836 + 3195075625 = 18594^2 + 56525^2 .

It is a cyclic number.

It is not a de Polignac number, because 3540812461 - 2¹ = 3540812459 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 (3540812491) 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, 3110866 + ... + 3112003.

It is an arithmetic number, because the mean of its divisors is an integer number (886758975).

Almost surely, 2^3540812461 is an apocalyptic number.

It is an amenable number.

3540812461 is a deficient number, since it is larger than the sum of its proper divisors (6223439).

3540812461 is an equidigital number, since it uses as much as digits as its factorization.

3540812461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223438.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 3540812461 is about 59504.7263753057. The cubic root of 3540812461 is about 1524.1731554265.

The spelling of 3540812461 in words is "three billion, five hundred forty million, eight hundred twelve thousand, four hundred sixty-one".