193200981 has 8 divisors (see below), whose sum is σ = 260152224. Its totient is φ = 127525200.

The previous prime is 193200961. The next prime is 193200991. The reversal of 193200981 is 189002391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 193200981 - 2⁷ = 193200853 is a prime.

It is a super-2 number, since 2×193200981² = 74653238118724722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193200901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318511 + ... + 319116.

It is an arithmetic number, because the mean of its divisors is an integer number (32519028).

Almost surely, 2^193200981 is an apocalyptic number.

It is an amenable number.

193200981 is a deficient number, since it is larger than the sum of its proper divisors (66951243).

193200981 is a wasteful number, since it uses less digits than its factorization.

193200981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637731.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 193200981 is about 13899.6755717535. The cubic root of 193200981 is about 578.1001859756.

The spelling of 193200981 in words is "one hundred ninety-three million, two hundred thousand, nine hundred eighty-one".