2186428697 has 16 divisors (see below), whose sum is σ = 2321447040. Its totient is φ = 2055685632.

The previous prime is 2186428693. The next prime is 2186428723. The reversal of 2186428697 is 7968246812.

It is a cyclic number.

It is not a de Polignac number, because 2186428697 - 2² = 2186428693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2186428693) 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, 437708 + ... + 442674.

It is an arithmetic number, because the mean of its divisors is an integer number (145090440).

Almost surely, 2^2186428697 is an apocalyptic number.

It is an amenable number.

2186428697 is a deficient number, since it is larger than the sum of its proper divisors (135018343).

2186428697 is a wasteful number, since it uses less digits than its factorization.

2186428697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392.

The product of its digits is 2322432, while the sum is 53.

The square root of 2186428697 is about 46759.2632213126. The cubic root of 2186428697 is about 1297.9115771637.

The spelling of 2186428697 in words is "two billion, one hundred eighty-six million, four hundred twenty-eight thousand, six hundred ninety-seven".