1993416149 has 2 divisors, whose sum is σ = 1993416150. Its totient is φ = 1993416148.

The previous prime is 1993416121. The next prime is 1993416167. The reversal of 1993416149 is 9416143991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1501020049 + 492396100 = 38743^2 + 22190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1993416149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1993416199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996708074 + 996708075.

It is an arithmetic number, because the mean of its divisors is an integer number (996708075).

Almost surely, 2^1993416149 is an apocalyptic number.

It is an amenable number.

1993416149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993416149 is an equidigital number, since it uses as much as digits as its factorization.

1993416149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 1993416149 is about 44647.6891787246. The cubic root of 1993416149 is about 1258.5370079837.

The spelling of 1993416149 in words is "one billion, nine hundred ninety-three million, four hundred sixteen thousand, one hundred forty-nine".