537394391 has 8 divisors (see below), whose sum is σ = 545727504. Its totient is φ = 529087680.

The previous prime is 537394369. The next prime is 537394397. The reversal of 537394391 is 193493735.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 537394391 - 2¹⁸ = 537132247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537394397) 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, 36581 + ... + 49121.

It is an arithmetic number, because the mean of its divisors is an integer number (68215938).

Almost surely, 2^537394391 is an apocalyptic number.

537394391 is a deficient number, since it is larger than the sum of its proper divisors (8333113).

537394391 is a wasteful number, since it uses less digits than its factorization.

537394391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201.

The product of its digits is 306180, while the sum is 44.

The square root of 537394391 is about 23181.7685045814. The cubic root of 537394391 is about 813.0134114012.

The spelling of 537394391 in words is "five hundred thirty-seven million, three hundred ninety-four thousand, three hundred ninety-one".