2189431699 has 16 divisors (see below), whose sum is σ = 2781614080. Its totient is φ = 1676414880.

The previous prime is 2189431697. The next prime is 2189431721. The reversal of 2189431699 is 9961349812.

It is not a de Polignac number, because 2189431699 - 2¹ = 2189431697 is a prime.

It is a super-2 number, since 2×2189431699² = 9587222329172053202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2189431697) 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, 385239 + ... + 390880.

It is an arithmetic number, because the mean of its divisors is an integer number (173850880).

Almost surely, 2^2189431699 is an apocalyptic number.

2189431699 is a deficient number, since it is larger than the sum of its proper divisors (592182381).

2189431699 is a wasteful number, since it uses less digits than its factorization.

2189431699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776170.

The product of its digits is 839808, while the sum is 52.

The square root of 2189431699 is about 46791.3635086647. The cubic root of 2189431699 is about 1298.5055210681.

The spelling of 2189431699 in words is "two billion, one hundred eighty-nine million, four hundred thirty-one thousand, six hundred ninety-nine".