501965749 has 4 divisors (see below), whose sum is σ = 531493164. Its totient is φ = 472438336.

The previous prime is 501965741. The next prime is 501965753. The reversal of 501965749 is 947569105.

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

It can be written as a sum of positive squares in 2 ways, for example, as 184769649 + 317196100 = 13593^2 + 17810^2 .

It is a cyclic number.

It is not a de Polignac number, because 501965749 - 2³ = 501965741 is a prime.

It is a super-2 number, since 2×501965749² = 503939226338262002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501965699 and 501965708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501965741) 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, 14763682 + ... + 14763715.

It is an arithmetic number, because the mean of its divisors is an integer number (132873291).

Almost surely, 2^501965749 is an apocalyptic number.

It is an amenable number.

501965749 is a deficient number, since it is larger than the sum of its proper divisors (29527415).

501965749 is a wasteful number, since it uses less digits than its factorization.

501965749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29527414.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 501965749 is about 22404.5921408983. The cubic root of 501965749 is about 794.7393098557.

It can be divided in two parts, 50196 and 5749, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 501965749 in words is "five hundred one million, nine hundred sixty-five thousand, seven hundred forty-nine".