537147978 has 16 divisors (see below), whose sum is σ = 1090331040. Its totient is φ = 176376816.

The previous prime is 537147971. The next prime is 537147979. The reversal of 537147978 is 879741735.

It is a self number, because there is not a number n which added to its sum of digits gives 537147978.

It is not an unprimeable number, because it can be changed into a prime (537147971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667693 + ... + 668496.

It is an arithmetic number, because the mean of its divisors is an integer number (68145690).

Almost surely, 2^537147978 is an apocalyptic number.

537147978 is an abundant number, since it is smaller than the sum of its proper divisors (553183062).

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

537147978 is a wasteful number, since it uses less digits than its factorization.

537147978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336261.

The product of its digits is 1481760, while the sum is 51.

The square root of 537147978 is about 23176.4530936034. The cubic root of 537147978 is about 812.8891279418.

The spelling of 537147978 in words is "five hundred thirty-seven million, one hundred forty-seven thousand, nine hundred seventy-eight".