193020290921 has 16 divisors (see below), whose sum is σ = 196789227648. Its totient is φ = 189294537600.

The previous prime is 193020290909. The next prime is 193020290927. The reversal of 193020290921 is 129092020391.

It is a cyclic number.

It is not a de Polignac number, because 193020290921 - 2³⁰ = 191946549097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193020290927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5924486 + ... + 5956976.

It is an arithmetic number, because the mean of its divisors is an integer number (12299326728).

Almost surely, 2^193020290921 is an apocalyptic number.

It is an amenable number.

193020290921 is a deficient number, since it is larger than the sum of its proper divisors (3768936727).

193020290921 is a wasteful number, since it uses less digits than its factorization.

193020290921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33152.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 193020290921 in words is "one hundred ninety-three billion, twenty million, two hundred ninety thousand, nine hundred twenty-one".