537501816 has 24 divisors (see below), whose sum is σ = 1455734280. Its totient is φ = 179167248.

The previous prime is 537501799. The next prime is 537501821. The reversal of 537501816 is 618105735.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3732580 + ... + 3732723.

It is an arithmetic number, because the mean of its divisors is an integer number (60655595).

Almost surely, 2^537501816 is an apocalyptic number.

It is an amenable number.

537501816 is an abundant number, since it is smaller than the sum of its proper divisors (918232464).

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

537501816 is a wasteful number, since it uses less digits than its factorization.

537501816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465315 (or 7465308 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 537501816 is about 23184.0854035694. The cubic root of 537501816 is about 813.0675815155.

The spelling of 537501816 in words is "five hundred thirty-seven million, five hundred one thousand, eight hundred sixteen".