1670863279 has 8 divisors (see below), whose sum is σ = 1716598928. Its totient is φ = 1625158080.

The previous prime is 1670863273. The next prime is 1670863297. The reversal of 1670863279 is 9723680761.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1670863279 - 2¹⁷ = 1670732207 is a prime.

It is a super-2 number, since 2×1670863279² = 5583568194221263682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670863273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144544 + ... + 155674.

It is an arithmetic number, because the mean of its divisors is an integer number (214574866).

Almost surely, 2^1670863279 is an apocalyptic number.

1670863279 is a deficient number, since it is larger than the sum of its proper divisors (45735649).

1670863279 is a wasteful number, since it uses less digits than its factorization.

1670863279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1670863279 is about 40876.1945268881. The cubic root of 1670863279 is about 1186.6253942515.

The spelling of 1670863279 in words is "one billion, six hundred seventy million, eight hundred sixty-three thousand, two hundred seventy-nine".