1670400346 has 16 divisors (see below), whose sum is σ = 2616436800. Its totient is φ = 798307488.

The previous prime is 1670400343. The next prime is 1670400349. The reversal of 1670400346 is 6430040761.

It is an interprime number because it is at equal distance from previous prime (1670400343) and next prime (1670400349).

It is not an unprimeable number, because it can be changed into a prime (1670400341) 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 7 ways as a sum of consecutive naturals, for example, 54670 + ... + 79558.

It is an arithmetic number, because the mean of its divisors is an integer number (163527300).

Almost surely, 2^1670400346 is an apocalyptic number.

1670400346 is a deficient number, since it is larger than the sum of its proper divisors (946036454).

1670400346 is a wasteful number, since it uses less digits than its factorization.

1670400346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26373.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1670400346 is about 40870.5315111022. The cubic root of 1670400346 is about 1186.5157944614.

The spelling of 1670400346 in words is "one billion, six hundred seventy million, four hundred thousand, three hundred forty-six".