348161993 has 2 divisors, whose sum is σ = 348161994. Its totient is φ = 348161992.

The previous prime is 348161963. The next prime is 348161999. The reversal of 348161993 is 399161843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280462009 + 67699984 = 16747^2 + 8228^2 .

It is an emirp because it is prime and its reverse (399161843) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 348161993 - 2¹² = 348157897 is a prime.

It is not a weakly prime, because it can be changed into another prime (348161999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174080996 + 174080997.

It is an arithmetic number, because the mean of its divisors is an integer number (174080997).

Almost surely, 2^348161993 is an apocalyptic number.

It is an amenable number.

348161993 is a deficient number, since it is larger than the sum of its proper divisors (1).

348161993 is an equidigital number, since it uses as much as digits as its factorization.

348161993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 348161993 is about 18659.0994691598. The cubic root of 348161993 is about 703.4940898959.

The spelling of 348161993 in words is "three hundred forty-eight million, one hundred sixty-one thousand, nine hundred ninety-three".