1679278907 has 4 divisors (see below), whose sum is σ = 1679458416. Its totient is φ = 1679099400.

The previous prime is 1679278903. The next prime is 1679278949. The reversal of 1679278907 is 7098729761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7098729761 = 6959 ⋅1020079.

It is a cyclic number.

It is not a de Polignac number, because 1679278907 - 2² = 1679278903 is a prime.

It is a super-2 number, since 2×1679278907² = 5639955294990229298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1679278903) 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, 74903 + ... + 94704.

It is an arithmetic number, because the mean of its divisors is an integer number (419864604).

Almost surely, 2^1679278907 is an apocalyptic number.

1679278907 is a deficient number, since it is larger than the sum of its proper divisors (179509).

1679278907 is an equidigital number, since it uses as much as digits as its factorization.

1679278907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179508.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The square root of 1679278907 is about 40979.0056858387. The cubic root of 1679278907 is about 1188.6142820649.

The spelling of 1679278907 in words is "one billion, six hundred seventy-nine million, two hundred seventy-eight thousand, nine hundred seven".