1986995067 has 8 divisors (see below), whose sum is σ = 2650497360. Its totient is φ = 1324078080.

The previous prime is 1986995063. The next prime is 1986995083. The reversal of 1986995067 is 7605996891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1986995067 - 2² = 1986995063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1986995067.

It is not an unprimeable number, because it can be changed into a prime (1986995063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138342 + ... + 152027.

It is an arithmetic number, because the mean of its divisors is an integer number (331312170).

Almost surely, 2^1986995067 is an apocalyptic number.

1986995067 is a deficient number, since it is larger than the sum of its proper divisors (663502293).

1986995067 is a wasteful number, since it uses less digits than its factorization.

1986995067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292653.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The square root of 1986995067 is about 44575.7228432697. The cubic root of 1986995067 is about 1257.1842444935.

The spelling of 1986995067 in words is "one billion, nine hundred eighty-six million, nine hundred ninety-five thousand, sixty-seven".