537781364 has 18 divisors (see below), whose sum is σ = 954223830. Its totient is φ = 265196736.

The previous prime is 537781357. The next prime is 537781367. The reversal of 537781364 is 463187735.

It can be written as a sum of positive squares in 3 ways, for example, as 18852964 + 518928400 = 4342^2 + 22780^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537781367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8702 + ... + 33930.

It is an arithmetic number, because the mean of its divisors is an integer number (53012435).

Almost surely, 2^537781364 is an apocalyptic number.

It is an amenable number.

537781364 is a deficient number, since it is larger than the sum of its proper divisors (416442466).

537781364 is a wasteful number, since it uses less digits than its factorization.

537781364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25379 (or 25304 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 537781364 is about 23190.1134969193. The cubic root of 537781364 is about 813.2085125270.

The spelling of 537781364 in words is "five hundred thirty-seven million, seven hundred eighty-one thousand, three hundred sixty-four".