1986747078162 has 128 divisors (see below), whose sum is σ = 5352426086400. Its totient is φ = 485682919680.

The previous prime is 1986747078143. The next prime is 1986747078241. The reversal of 1986747078162 is 2618707476891.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 1986747078093 and 1986747078102.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2196378 + ... + 2966069.

It is an arithmetic number, because the mean of its divisors is an integer number (41815828800).

Almost surely, 2^{1986747078162} is an apocalyptic number.

1986747078162 is an abundant number, since it is smaller than the sum of its proper divisors (3365679008238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1986747078162 is a wasteful number, since it uses less digits than its factorization.

1986747078162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162501 (or 5162487 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 66.

The spelling of 1986747078162 in words is "one trillion, nine hundred eighty-six billion, seven hundred forty-seven million, seventy-eight thousand, one hundred sixty-two".