2188022397 has 16 divisors (see below), whose sum is σ = 3183797568. Its totient is φ = 1325566080.

The previous prime is 2188022351. The next prime is 2188022413. The reversal of 2188022397 is 7932208812.

It is a happy number.

It is not a de Polignac number, because 2188022397 - 2¹⁴ = 2188006013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188022497) 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, 86223 + ... + 108675.

It is an arithmetic number, because the mean of its divisors is an integer number (198987348).

Almost surely, 2^2188022397 is an apocalyptic number.

It is an amenable number.

2188022397 is a deficient number, since it is larger than the sum of its proper divisors (995775171).

2188022397 is a wasteful number, since it uses less digits than its factorization.

2188022397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25420.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 2188022397 is about 46776.3016601356. The cubic root of 2188022397 is about 1298.2268522225.

The spelling of 2188022397 in words is "two billion, one hundred eighty-eight million, twenty-two thousand, three hundred ninety-seven".