2188651145 has 32 divisors (see below), whose sum is σ = 2836487808. Its totient is φ = 1615223808.

The previous prime is 2188651139. The next prime is 2188651151. The reversal of 2188651145 is 5411568812.

It is an interprime number because it is at equal distance from previous prime (2188651139) and next prime (2188651151).

It is a cyclic number.

It is not a de Polignac number, because 2188651145 - 2¹² = 2188647049 is a prime.

It is a super-2 number, since 2×2188651145² = 9580387669019622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1291919 + ... + 1293611.

It is an arithmetic number, because the mean of its divisors is an integer number (88640244).

Almost surely, 2^2188651145 is an apocalyptic number.

It is an amenable number.

2188651145 is a deficient number, since it is larger than the sum of its proper divisors (647836663).

2188651145 is a wasteful number, since it uses less digits than its factorization.

2188651145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its digits is 76800, while the sum is 41.

The square root of 2188651145 is about 46783.0219737887. The cubic root of 2188651145 is about 1298.3511927174.

The spelling of 2188651145 in words is "two billion, one hundred eighty-eight million, six hundred fifty-one thousand, one hundred forty-five".