1679919331 has 4 divisors (see below), whose sum is σ = 1708392600. Its totient is φ = 1651446064.

The previous prime is 1679919301. The next prime is 1679919347. The reversal of 1679919331 is 1339199761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1339199761 = 521 ⋅2570441.

It is a cyclic number.

It is not a de Polignac number, because 1679919331 - 2¹³ = 1679911139 is a prime.

It is a super-2 number, since 2×1679919331² = 5644257917334975122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1679919301) 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, 14236546 + ... + 14236663.

It is an arithmetic number, because the mean of its divisors is an integer number (427098150).

Almost surely, 2^1679919331 is an apocalyptic number.

1679919331 is a deficient number, since it is larger than the sum of its proper divisors (28473269).

1679919331 is an equidigital number, since it uses as much as digits as its factorization.

1679919331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28473268.

The product of its digits is 275562, while the sum is 49.

The square root of 1679919331 is about 40986.8189909878. The cubic root of 1679919331 is about 1188.7653628576.

The spelling of 1679919331 in words is "one billion, six hundred seventy-nine million, nine hundred nineteen thousand, three hundred thirty-one".