10194981 has 4 divisors (see below), whose sum is σ = 13593312. Its totient is φ = 6796652.

The previous prime is 10194971. The next prime is 10194983. The reversal of 10194981 is 18949101.

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.

It is a cyclic number.

It is not a de Polignac number, because 10194981 - 2⁵ = 10194949 is a prime.

It is a super-2 number, since 2×10194981² = 207875275180722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10194983) 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, 1699161 + ... + 1699166.

It is an arithmetic number, because the mean of its divisors is an integer number (3398328).

Almost surely, 2^10194981 is an apocalyptic number.

It is an amenable number.

10194981 is a deficient number, since it is larger than the sum of its proper divisors (3398331).

10194981 is an equidigital number, since it uses as much as digits as its factorization.

10194981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398330.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 10194981 is about 3192.9580329218. The cubic root of 10194981 is about 216.8347117094.

It can be divided in two parts, 10194 and 981, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 10194981 in words is "ten million, one hundred ninety-four thousand, nine hundred eighty-one".