4156501644 has 36 divisors (see below), whose sum is σ = 10518379144. Its totient is φ = 1383962112.

The previous prime is 4156501637. The next prime is 4156501673. The reversal of 4156501644 is 4461056514.

4156501644 is a `hidden beast` number, since 4 + 1 + 5 + 6 + 5 + 0 + 1 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4156501599 and 4156501608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30997 + ... + 96300.

Almost surely, 2^4156501644 is an apocalyptic number.

It is an amenable number.

4156501644 is an abundant number, since it is smaller than the sum of its proper divisors (6361877500).

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

4156501644 is a wasteful number, since it uses less digits than its factorization.

4156501644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128214 (or 128209 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 4156501644 is about 64470.9364287506. The cubic root of 4156501644 is about 1607.8393459086.

The spelling of 4156501644 in words is "four billion, one hundred fifty-six million, five hundred one thousand, six hundred forty-four".