1993850867 has 2 divisors, whose sum is σ = 1993850868. Its totient is φ = 1993850866.

The previous prime is 1993850843. The next prime is 1993850917. The reversal of 1993850867 is 7680583991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1993850867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1993850167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996925433 + 996925434.

It is an arithmetic number, because the mean of its divisors is an integer number (996925434).

Almost surely, 2^1993850867 is an apocalyptic number.

1993850867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993850867 is an equidigital number, since it uses as much as digits as its factorization.

1993850867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 1993850867 is about 44652.5572280021. The cubic root of 1993850867 is about 1258.6284872809.

The spelling of 1993850867 in words is "one billion, nine hundred ninety-three million, eight hundred fifty thousand, eight hundred sixty-seven".