1670332356 has 144 divisors (see below), whose sum is σ = 5277662208. Its totient is φ = 432734400.

The previous prime is 1670332319. The next prime is 1670332369. The reversal of 1670332356 is 6532330761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1670332356.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2059191 + ... + 2060001.

It is an arithmetic number, because the mean of its divisors is an integer number (36650432).

Almost surely, 2^1670332356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670332356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2638831104).

1670332356 is an abundant number, since it is smaller than the sum of its proper divisors (3607329852).

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

1670332356 is a wasteful number, since it uses less digits than its factorization.

1670332356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 1670332356 is about 40869.6997297509. The cubic root of 1670332356 is about 1186.4996960644.

The spelling of 1670332356 in words is "one billion, six hundred seventy million, three hundred thirty-two thousand, three hundred fifty-six".