1993464679 has 2 divisors, whose sum is σ = 1993464680. Its totient is φ = 1993464678.

The previous prime is 1993464661. The next prime is 1993464709. The reversal of 1993464679 is 9764643991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1993464679 - 2⁵ = 1993464647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1994464679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996732339 + 996732340.

It is an arithmetic number, because the mean of its divisors is an integer number (996732340).

Almost surely, 2^1993464679 is an apocalyptic number.

1993464679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993464679 is an equidigital number, since it uses as much as digits as its factorization.

1993464679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 58.

The square root of 1993464679 is about 44648.2326525922. The cubic root of 1993464679 is about 1258.5472209884.

The spelling of 1993464679 in words is "one billion, nine hundred ninety-three million, four hundred sixty-four thousand, six hundred seventy-nine".