1986198414 has 16 divisors (see below), whose sum is σ = 4009523328. Its totient is φ = 655878392.

The previous prime is 1986198413. The next prime is 1986198439. The reversal of 1986198414 is 4148916891.

It is a super-2 number, since 2×1986198414² = 7889968279552230792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986198413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546242 + ... + 1547525.

It is an arithmetic number, because the mean of its divisors is an integer number (250595208).

Almost surely, 2^1986198414 is an apocalyptic number.

1986198414 is an abundant number, since it is smaller than the sum of its proper divisors (2023324914).

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

1986198414 is a wasteful number, since it uses less digits than its factorization.

1986198414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093879.

The product of its digits is 497664, while the sum is 51.

The square root of 1986198414 is about 44566.7859958512. The cubic root of 1986198414 is about 1257.0162062505.

The spelling of 1986198414 in words is "one billion, nine hundred eighty-six million, one hundred ninety-eight thousand, four hundred fourteen".