4156661118 has 16 divisors (see below), whose sum is σ = 8599988880. Its totient is φ = 1337775936.

The previous prime is 4156661111. The next prime is 4156661123. The reversal of 4156661118 is 8111666514.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156661111) 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, 11944255 + ... + 11944602.

It is an arithmetic number, because the mean of its divisors is an integer number (537499305).

Almost surely, 2^4156661118 is an apocalyptic number.

4156661118 is an abundant number, since it is smaller than the sum of its proper divisors (4443327762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4156661118 is a wasteful number, since it uses less digits than its factorization.

4156661118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23888891.

The product of its digits is 34560, while the sum is 39.

The square root of 4156661118 is about 64472.1732067409. The cubic root of 4156661118 is about 1607.8599084966.

The spelling of 4156661118 in words is "four billion, one hundred fifty-six million, six hundred sixty-one thousand, one hundred eighteen".