193041009 has 16 divisors (see below), whose sum is σ = 326842240. Its totient is φ = 110309040.

The previous prime is 193040993. The next prime is 193041011. The reversal of 193041009 is 900140391.

It is not a de Polignac number, because 193041009 - 2⁴ = 193040993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193041029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510502 + ... + 510879.

It is an arithmetic number, because the mean of its divisors is an integer number (20427640).

Almost surely, 2^193041009 is an apocalyptic number.

It is an amenable number.

193041009 is a deficient number, since it is larger than the sum of its proper divisors (133801231).

193041009 is a wasteful number, since it uses less digits than its factorization.

193041009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021397 (or 1021391 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 193041009 is about 13893.9198572613. The cubic root of 193041009 is about 577.9405846822.

The spelling of 193041009 in words is "one hundred ninety-three million, forty-one thousand, nine".