1670426880 has 288 divisors, whose sum is σ = 5554120320. Its totient is φ = 427622400.

The previous prime is 1670426873. The next prime is 1670426887. The reversal of 1670426880 is 886240761.

It is an interprime number because it is at equal distance from previous prime (1670426873) and next prime (1670426887).

It is a super-2 number, since 2×1670426880² = 5580651922853068800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1670426887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16538830 + ... + 16538930.

It is an arithmetic number, because the mean of its divisors is an integer number (19285140).

Almost surely, 2^1670426880 is an apocalyptic number.

1670426880 is a gapful number since it is divisible by the number (10) 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 1670426880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2777060160).

1670426880 is an abundant number, since it is smaller than the sum of its proper divisors (3883693440).

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

1670426880 is a wasteful number, since it uses less digits than its factorization.

1670426880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1670426880 is about 40870.8561202234. The cubic root of 1670426880 is about 1186.5220769559.

The spelling of 1670426880 in words is "one billion, six hundred seventy million, four hundred twenty-six thousand, eight hundred eighty".