494131511 has 4 divisors (see below), whose sum is σ = 494176800. Its totient is φ = 494086224.

The previous prime is 494131487. The next prime is 494131513. The reversal of 494131511 is 115131494.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 494131511 - 2¹⁸ = 493869367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494131513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4850 + ... + 31808.

It is an arithmetic number, because the mean of its divisors is an integer number (123544200).

Almost surely, 2^494131511 is an apocalyptic number.

494131511 is a deficient number, since it is larger than the sum of its proper divisors (45289).

494131511 is a wasteful number, since it uses less digits than its factorization.

494131511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45288.

The product of its digits is 2160, while the sum is 29.

The square root of 494131511 is about 22229.0690538313. The cubic root of 494131511 is about 790.5830823251.

The spelling of 494131511 in words is "four hundred ninety-four million, one hundred thirty-one thousand, five hundred eleven".