1986932140199 has 4 divisors (see below), whose sum is σ = 1987008979464. Its totient is φ = 1986855300936.

The previous prime is 1986932140169. The next prime is 1986932140201. The reversal of 1986932140199 is 9910412396891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1986932140199 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 (1986932140129) 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, 38380832 + ... + 38432565.

It is an arithmetic number, because the mean of its divisors is an integer number (496752244866).

Almost surely, 2^{1986932140199} is an apocalyptic number.

1986932140199 is a deficient number, since it is larger than the sum of its proper divisors (76839265).

1986932140199 is an equidigital number, since it uses as much as digits as its factorization.

1986932140199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76839264.

The product of its (nonzero) digits is 7558272, while the sum is 62.

The spelling of 1986932140199 in words is "one trillion, nine hundred eighty-six billion, nine hundred thirty-two million, one hundred forty thousand, one hundred ninety-nine".