193921441 has 16 divisors (see below), whose sum is σ = 231890688. Its totient is φ = 158558400.

The previous prime is 193921439. The next prime is 193921451. The reversal of 193921441 is 144129391.

It is not a de Polignac number, because 193921441 - 2¹ = 193921439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 193921397 and 193921406.

It is not an unprimeable number, because it can be changed into a prime (193921411) 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, 66351 + ... + 69211.

It is an arithmetic number, because the mean of its divisors is an integer number (14493168).

Almost surely, 2^193921441 is an apocalyptic number.

It is an amenable number.

193921441 is a deficient number, since it is larger than the sum of its proper divisors (37969247).

193921441 is a wasteful number, since it uses less digits than its factorization.

193921441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312.

The product of its digits is 7776, while the sum is 34.

The square root of 193921441 is about 13925.5678878816. The cubic root of 193921441 is about 578.8178866328.

The spelling of 193921441 in words is "one hundred ninety-three million, nine hundred twenty-one thousand, four hundred forty-one".