1206978192 has 240 divisors, whose sum is σ = 4243627200. Its totient is φ = 326592000.

The previous prime is 1206978191. The next prime is 1206978193. The reversal of 1206978192 is 2918796021.

It is an interprime number because it is at equal distance from previous prime (1206978191) and next prime (1206978193).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1206978191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400692 + ... + 403692.

It is an arithmetic number, because the mean of its divisors is an integer number (17681780).

Almost surely, 2^1206978192 is an apocalyptic number.

1206978192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206978192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2121813600).

1206978192 is an abundant number, since it is smaller than the sum of its proper divisors (3036649008).

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

1206978192 is a wasteful number, since it uses less digits than its factorization.

1206978192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051 (or 3032 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1206978192 is about 34741.5916733819. The cubic root of 1206978192 is about 1064.7144324612.

The spelling of 1206978192 in words is "one billion, two hundred six million, nine hundred seventy-eight thousand, one hundred ninety-two".