4156646942 has 16 divisors (see below), whose sum is σ = 7136476512. Its totient is φ = 1778721120.

The previous prime is 4156646849. The next prime is 4156646947. The reversal of 4156646942 is 2496466514.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156646947) 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, 215333 + ... + 233840.

It is an arithmetic number, because the mean of its divisors is an integer number (446029782).

Almost surely, 2^4156646942 is an apocalyptic number.

4156646942 is a deficient number, since it is larger than the sum of its proper divisors (2979829570).

4156646942 is a wasteful number, since it uses less digits than its factorization.

4156646942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449843.

The product of its digits is 1244160, while the sum is 47.

The square root of 4156646942 is about 64472.0632677441. The cubic root of 4156646942 is about 1607.8580806635.

The spelling of 4156646942 in words is "four billion, one hundred fifty-six million, six hundred forty-six thousand, nine hundred forty-two".