537497730 has 192 divisors, whose sum is σ = 1759470336. Its totient is φ = 111513600.

The previous prime is 537497677. The next prime is 537497801. The reversal of 537497730 is 37794735.

537497730 is a `hidden beast` number, since 537 + 49 + 7 + 73 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 838210 + ... + 838850.

It is an arithmetic number, because the mean of its divisors is an integer number (9163908).

Almost surely, 2^537497730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537497730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879735168).

537497730 is an abundant number, since it is smaller than the sum of its proper divisors (1221972606).

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

537497730 is a wasteful number, since it uses less digits than its factorization.

537497730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 45.

The square root of 537497730 is about 23183.9972826085. The cubic root of 537497730 is about 813.0655212418.

The spelling of 537497730 in words is "five hundred thirty-seven million, four hundred ninety-seven thousand, seven hundred thirty".