1993723379 has 2 divisors, whose sum is σ = 1993723380. Its totient is φ = 1993723378.

The previous prime is 1993723357. The next prime is 1993723411. The reversal of 1993723379 is 9733273991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1993723379 - 2¹⁶ = 1993657843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1993723379.

It is not a weakly prime, because it can be changed into another prime (1993728379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996861689 + 996861690.

It is an arithmetic number, because the mean of its divisors is an integer number (996861690).

Almost surely, 2^1993723379 is an apocalyptic number.

1993723379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993723379 is an equidigital number, since it uses as much as digits as its factorization.

1993723379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1928934, while the sum is 53.

The square root of 1993723379 is about 44651.1296497636. The cubic root of 1993723379 is about 1258.6016608933.

The spelling of 1993723379 in words is "one billion, nine hundred ninety-three million, seven hundred twenty-three thousand, three hundred seventy-nine".