2188118428 has 12 divisors (see below), whose sum is σ = 3886360072. Its totient is φ = 1077729840.

The previous prime is 2188118407. The next prime is 2188118431. The reversal of 2188118428 is 8248118812.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4082043 + ... + 4082578.

Almost surely, 2^2188118428 is an apocalyptic number.

It is an amenable number.

2188118428 is a deficient number, since it is larger than the sum of its proper divisors (1698241644).

2188118428 is a wasteful number, since it uses less digits than its factorization.

2188118428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164692 (or 8164690 counting only the distinct ones).

The product of its digits is 65536, while the sum is 43.

The square root of 2188118428 is about 46777.3281408847. The cubic root of 2188118428 is about 1298.2458447458.

The spelling of 2188118428 in words is "two billion, one hundred eighty-eight million, one hundred eighteen thousand, four hundred twenty-eight".