1670338505 has 16 divisors (see below), whose sum is σ = 2208282048. Its totient is φ = 1202760000.

The previous prime is 1670338493. The next prime is 1670338517. The reversal of 1670338505 is 5058330761.

It is an interprime number because it is at equal distance from previous prime (1670338493) and next prime (1670338517).

It is not a de Polignac number, because 1670338505 - 2⁶ = 1670338441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144791 + ... + 155900.

It is an arithmetic number, because the mean of its divisors is an integer number (138017628).

Almost surely, 2^1670338505 is an apocalyptic number.

It is an amenable number.

1670338505 is a deficient number, since it is larger than the sum of its proper divisors (537943543).

1670338505 is a wasteful number, since it uses less digits than its factorization.

1670338505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300808.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1670338505 is about 40869.7749565617. The cubic root of 1670338505 is about 1186.5011520177.

The spelling of 1670338505 in words is "one billion, six hundred seventy million, three hundred thirty-eight thousand, five hundred five".