1949887866086 has 16 divisors (see below), whose sum is σ = 2933725344000. Its totient is φ = 971983461960.

The previous prime is 1949887866023. The next prime is 1949887866089. The reversal of 1949887866086 is 6806687889491.

It is a self number, because there is not a number n which added to its sum of digits gives 1949887866086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949887866089) 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, 45170 + ... + 1975301.

It is an arithmetic number, because the mean of its divisors is an integer number (183357834000).

Almost surely, 2^{1949887866086} is an apocalyptic number.

1949887866086 is a deficient number, since it is larger than the sum of its proper divisors (983837477914).

1949887866086 is a wasteful number, since it uses less digits than its factorization.

1949887866086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021939.

The product of its (nonzero) digits is 2006581248, while the sum is 80.

The spelling of 1949887866086 in words is "one trillion, nine hundred forty-nine billion, eight hundred eighty-seven million, eight hundred sixty-six thousand, eighty-six".