1993068169 has 4 divisors (see below), whose sum is σ = 2018296960. Its totient is φ = 1967839380.

The previous prime is 1993068167. The next prime is 1993068173. The reversal of 1993068169 is 9618603991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9618603991 = 173 ⋅55598867.

It is a cyclic number.

It is not a de Polignac number, because 1993068169 - 2¹ = 1993068167 is a prime.

It is a super-2 number, since 2×1993068169² = 7944641452562025122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1993068163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12614277 + ... + 12614434.

It is an arithmetic number, because the mean of its divisors is an integer number (504574240).

Almost surely, 2^1993068169 is an apocalyptic number.

It is an amenable number.

1993068169 is a deficient number, since it is larger than the sum of its proper divisors (25228791).

1993068169 is an equidigital number, since it uses as much as digits as its factorization.

1993068169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25228790.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 1993068169 is about 44643.7920544391. The cubic root of 1993068169 is about 1258.4637716963.

The spelling of 1993068169 in words is "one billion, nine hundred ninety-three million, sixty-eight thousand, one hundred sixty-nine".