3946156649043 has 32 divisors (see below), whose sum is σ = 6129996751872. Its totient is φ = 2211191049600.

The previous prime is 3946156649033. The next prime is 3946156649051. The reversal of 3946156649043 is 3409466516493.

It is a happy number.

It is not a de Polignac number, because 3946156649043 - 2¹³ = 3946156640851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3946156649033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1069713 + ... + 3006093.

It is an arithmetic number, because the mean of its divisors is an integer number (191562398496).

Almost surely, 2^{3946156649043} is an apocalyptic number.

3946156649043 is a deficient number, since it is larger than the sum of its proper divisors (2183840102829).

3946156649043 is a wasteful number, since it uses less digits than its factorization.

3946156649043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938275.

The product of its (nonzero) digits is 50388480, while the sum is 60.

The spelling of 3946156649043 in words is "three trillion, nine hundred forty-six billion, one hundred fifty-six million, six hundred forty-nine thousand, forty-three".