1979151206418 has 64 divisors (see below), whose sum is σ = 4473341712000. Its totient is φ = 648436300992.

The previous prime is 1979151206413. The next prime is 1979151206437. The reversal of 1979151206418 is 8146021519791.

1979151206418 is a `hidden beast` number, since 1 + 9 + 7 + 9 + 15 + 1 + 206 + 418 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1979151206413) 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 31 ways as a sum of consecutive naturals, for example, 22477896 + ... + 22565772.

It is an arithmetic number, because the mean of its divisors is an integer number (69895964250).

Almost surely, 2^{1979151206418} is an apocalyptic number.

1979151206418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979151206418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2236670856000).

1979151206418 is an abundant number, since it is smaller than the sum of its proper divisors (2494190505582).

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

1979151206418 is a wasteful number, since it uses less digits than its factorization.

1979151206418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95016 (or 95010 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The spelling of 1979151206418 in words is "one trillion, nine hundred seventy-nine billion, one hundred fifty-one million, two hundred six thousand, four hundred eighteen".