537393961 has 8 divisors (see below), whose sum is σ = 578984840. Its totient is φ = 495839232.

The previous prime is 537393947. The next prime is 537394003. The reversal of 537393961 is 169393735.

It can be written as a sum of positive squares in 4 ways, for example, as 93238336 + 444155625 = 9656^2 + 21075^2 .

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 537393961 - 2¹⁵ = 537361193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537393361) 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, 27271 + ... + 42643.

It is an arithmetic number, because the mean of its divisors is an integer number (72373105).

Almost surely, 2^537393961 is an apocalyptic number.

It is an amenable number.

537393961 is a deficient number, since it is larger than the sum of its proper divisors (41590879).

537393961 is a wasteful number, since it uses less digits than its factorization.

537393961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18075.

The product of its digits is 459270, while the sum is 46.

The square root of 537393961 is about 23181.7592300498. The cubic root of 537393961 is about 813.0131945550.

The spelling of 537393961 in words is "five hundred thirty-seven million, three hundred ninety-three thousand, nine hundred sixty-one".