1670923797 has 4 divisors (see below), whose sum is σ = 2227898400. Its totient is φ = 1113949196.

The previous prime is 1670923781. The next prime is 1670923823. The reversal of 1670923797 is 7973290761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1670923797 - 2⁴ = 1670923781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670923747) 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 3 ways as a sum of consecutive naturals, for example, 278487297 + ... + 278487302.

It is an arithmetic number, because the mean of its divisors is an integer number (556974600).

Almost surely, 2^1670923797 is an apocalyptic number.

It is an amenable number.

1670923797 is a deficient number, since it is larger than the sum of its proper divisors (556974603).

1670923797 is an equidigital number, since it uses as much as digits as its factorization.

1670923797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556974602.

The product of its (nonzero) digits is 1000188, while the sum is 51.

The square root of 1670923797 is about 40876.9347798976. The cubic root of 1670923797 is about 1186.6397204443.

The spelling of 1670923797 in words is "one billion, six hundred seventy million, nine hundred twenty-three thousand, seven hundred ninety-seven".