1670278068 has 144 divisors (see below), whose sum is σ = 4598193600. Its totient is φ = 509483520.

The previous prime is 1670278061. The next prime is 1670278073. The reversal of 1670278068 is 8608720761.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670278061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3205648 + ... + 3206168.

It is an arithmetic number, because the mean of its divisors is an integer number (31931900).

Almost surely, 2^1670278068 is an apocalyptic number.

1670278068 is a gapful number since it is divisible by the number (18) 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 1670278068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2299096800).

1670278068 is an abundant number, since it is smaller than the sum of its proper divisors (2927915532).

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

1670278068 is a wasteful number, since it uses less digits than its factorization.

1670278068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1670278068 is about 40869.0355648381. The cubic root of 1670278068 is about 1186.4868416579.

The spelling of 1670278068 in words is "one billion, six hundred seventy million, two hundred seventy-eight thousand, sixty-eight".