205149371 has 4 divisors (see below), whose sum is σ = 234456432. Its totient is φ = 175842312.

The previous prime is 205149367. The next prime is 205149409. The reversal of 205149371 is 173941502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205149371 - 2² = 205149367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205149071) 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, 14653520 + ... + 14653533.

It is an arithmetic number, because the mean of its divisors is an integer number (58614108).

Almost surely, 2^205149371 is an apocalyptic number.

205149371 is a deficient number, since it is larger than the sum of its proper divisors (29307061).

205149371 is an equidigital number, since it uses as much as digits as its factorization.

205149371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29307060.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 205149371 is about 14323.0363750149. The cubic root of 205149371 is about 589.7800300355.

The spelling of 205149371 in words is "two hundred five million, one hundred forty-nine thousand, three hundred seventy-one".