3126543641 has 8 divisors (see below), whose sum is σ = 3381753480. Its totient is φ = 2873434752.

The previous prime is 3126543611. The next prime is 3126543643. The reversal of 3126543641 is 1463456213.

3126543641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 210975625 + 2915568016 = 14525^2 + 53996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3126543641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3126543643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522140 + ... + 528093.

It is an arithmetic number, because the mean of its divisors is an integer number (422719185).

Almost surely, 2^3126543641 is an apocalyptic number.

It is an amenable number.

3126543641 is a deficient number, since it is larger than the sum of its proper divisors (255209839).

3126543641 is a wasteful number, since it uses less digits than its factorization.

3126543641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050475.

The product of its digits is 51840, while the sum is 35.

The square root of 3126543641 is about 55915.5044777386. The cubic root of 3126543641 is about 1462.2495566092.

Adding to 3126543641 its reverse (1463456213), we get a palindrome (4589999854).

The spelling of 3126543641 in words is "three billion, one hundred twenty-six million, five hundred forty-three thousand, six hundred forty-one".