2188530392 has 8 divisors (see below), whose sum is σ = 4103494500. Its totient is φ = 1094265192.

The previous prime is 2188530361. The next prime is 2188530401. The reversal of 2188530392 is 2930358812.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136783142 + ... + 136783157.

Almost surely, 2^2188530392 is an apocalyptic number.

It is an amenable number.

2188530392 is a deficient number, since it is larger than the sum of its proper divisors (1914964108).

2188530392 is a wasteful number, since it uses less digits than its factorization.

2188530392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273566305 (or 273566301 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 2188530392 is about 46781.7313916448. The cubic root of 2188530392 is about 1298.3273145881.

The spelling of 2188530392 in words is "two billion, one hundred eighty-eight million, five hundred thirty thousand, three hundred ninety-two".