186982002397 has 4 divisors (see below), whose sum is σ = 188015052316. Its totient is φ = 185948952480.

The previous prime is 186982002391. The next prime is 186982002409. The reversal of 186982002397 is 793200289681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793200289681 = 359 ⋅2209471559.

It can be written as a sum of positive squares in 2 ways, for example, as 8501946436 + 178480055961 = 92206^2 + 422469^2 .

It is a cyclic number.

It is not a de Polignac number, because 186982002397 - 2³¹ = 184834518749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186982002391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516524688 + ... + 516525049.

It is an arithmetic number, because the mean of its divisors is an integer number (47003763079).

Almost surely, 2^186982002397 is an apocalyptic number.

It is an amenable number.

186982002397 is a deficient number, since it is larger than the sum of its proper divisors (1033049919).

186982002397 is a wasteful number, since it uses less digits than its factorization.

186982002397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033049918.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 186982002397 in words is "one hundred eighty-six billion, nine hundred eighty-two million, two thousand, three hundred ninety-seven".