1986097194 has 24 divisors (see below), whose sum is σ = 4309886880. Its totient is φ = 661005288.

The previous prime is 1986097193. The next prime is 1986097237. The reversal of 1986097194 is 4917906891.

1986097194 is a `hidden beast` number, since 19 + 8 + 609 + 7 + 19 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1986097194.

It is not an unprimeable number, because it can be changed into a prime (1986097193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73624 + ... + 96915.

It is an arithmetic number, because the mean of its divisors is an integer number (179578620).

Almost surely, 2^1986097194 is an apocalyptic number.

1986097194 is an abundant number, since it is smaller than the sum of its proper divisors (2323789686).

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

1986097194 is a wasteful number, since it uses less digits than its factorization.

1986097194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171194 (or 171191 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 1986097194 is about 44565.6503823292. The cubic root of 1986097194 is about 1256.9948526702.

The spelling of 1986097194 in words is "one billion, nine hundred eighty-six million, ninety-seven thousand, one hundred ninety-four".