537549894 has 72 divisors (see below), whose sum is σ = 1434581928. Its totient is φ = 144547200.

The previous prime is 537549871. The next prime is 537549899. The reversal of 537549894 is 498945735.

537549894 is a `hidden beast` number, since 5 + 3 + 7 + 549 + 8 + 94 = 666.

It is a super-2 number, since 2×537549894² = 577919777078822472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 537549894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537549899) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2932 + ... + 32919.

It is an arithmetic number, because the mean of its divisors is an integer number (19924749).

Almost surely, 2^537549894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537549894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717290964).

537549894 is an abundant number, since it is smaller than the sum of its proper divisors (897032034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

537549894 is a wasteful number, since it uses less digits than its factorization.

537549894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35890 (or 35880 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 537549894 is about 23185.1222554465. The cubic root of 537549894 is about 813.0918229826.

The spelling of 537549894 in words is "five hundred thirty-seven million, five hundred forty-nine thousand, eight hundred ninety-four".