4380918891 has 16 divisors (see below), whose sum is σ = 5977030176. Its totient is φ = 2853184256.

The previous prime is 4380918877. The next prime is 4380918907. The reversal of 4380918891 is 1988190834.

It is a cyclic number.

It is not a de Polignac number, because 4380918891 - 2⁶ = 4380918827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4380918811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22080 + ... + 96173.

It is an arithmetic number, because the mean of its divisors is an integer number (373564386).

Almost surely, 2^4380918891 is an apocalyptic number.

4380918891 is a deficient number, since it is larger than the sum of its proper divisors (1596111285).

4380918891 is a wasteful number, since it uses less digits than its factorization.

4380918891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118542.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 4380918891 is about 66188.5102642445. The cubic root of 4380918891 is about 1636.2703878701.

The spelling of 4380918891 in words is "four billion, three hundred eighty million, nine hundred eighteen thousand, eight hundred ninety-one".