20194351 has 8 divisors (see below), whose sum is σ = 21503664. Its totient is φ = 18898560.

The previous prime is 20194327. The next prime is 20194357. The reversal of 20194351 is 15349102.

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

It is not a de Polignac number, because 20194351 - 2⁵ = 20194319 is a prime.

It is a super-2 number, since 2×20194351² = 815623624622402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20194357) 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, 205 + ... + 6358.

It is an arithmetic number, because the mean of its divisors is an integer number (2687958).

Almost surely, 2^20194351 is an apocalyptic number.

20194351 is a deficient number, since it is larger than the sum of its proper divisors (1309313).

20194351 is a wasteful number, since it uses less digits than its factorization.

20194351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20194351 is about 4493.8125239044. The cubic root of 20194351 is about 272.3181785158.

The spelling of 20194351 in words is "twenty million, one hundred ninety-four thousand, three hundred fifty-one".