491925111 has 16 divisors (see below), whose sum is σ = 660215808. Its totient is φ = 325800000.

The previous prime is 491925097. The next prime is 491925113. The reversal of 491925111 is 111529194.

It is not a de Polignac number, because 491925111 - 2⁵ = 491925079 is a prime.

It is a super-3 number, since 3×491925111³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491925113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452010 + ... + 453096.

It is an arithmetic number, because the mean of its divisors is an integer number (41263488).

Almost surely, 2^491925111 is an apocalyptic number.

491925111 is a deficient number, since it is larger than the sum of its proper divisors (168290697).

491925111 is a wasteful number, since it uses less digits than its factorization.

491925111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942.

The product of its digits is 3240, while the sum is 33.

The square root of 491925111 is about 22179.3848201432. The cubic root of 491925111 is about 789.4046205744.

The spelling of 491925111 in words is "four hundred ninety-one million, nine hundred twenty-five thousand, one hundred eleven".