193985461 has 4 divisors (see below), whose sum is σ = 194140800. Its totient is φ = 193830124.

The previous prime is 193985423. The next prime is 193985489. The reversal of 193985461 is 164589391.

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: 164589391 = 89 ⋅1849319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193985461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193985411) 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, 75781 + ... + 78298.

It is an arithmetic number, because the mean of its divisors is an integer number (48535200).

Almost surely, 2^193985461 is an apocalyptic number.

It is an amenable number.

193985461 is a deficient number, since it is larger than the sum of its proper divisors (155339).

193985461 is a wasteful number, since it uses less digits than its factorization.

193985461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155338.

The product of its digits is 233280, while the sum is 46.

The square root of 193985461 is about 13927.8663477218. The cubic root of 193985461 is about 578.8815753854.

The spelling of 193985461 in words is "one hundred ninety-three million, nine hundred eighty-five thousand, four hundred sixty-one".