1670405353 has 4 divisors (see below), whose sum is σ = 1670494788. Its totient is φ = 1670315920.

The previous prime is 1670405327. The next prime is 1670405357. The reversal of 1670405353 is 3535040761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1657466944 + 12938409 = 40712^2 + 3597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1670405353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670405357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4858 + ... + 58003.

It is an arithmetic number, because the mean of its divisors is an integer number (417623697).

Almost surely, 2^1670405353 is an apocalyptic number.

It is an amenable number.

1670405353 is a deficient number, since it is larger than the sum of its proper divisors (89435).

1670405353 is an equidigital number, since it uses as much as digits as its factorization.

1670405353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89434.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 1670405353 is about 40870.5927654591. The cubic root of 1670405353 is about 1186.5169799813.

The spelling of 1670405353 in words is "one billion, six hundred seventy million, four hundred five thousand, three hundred fifty-three".