539194661 has 16 divisors (see below), whose sum is σ = 584817408. Its totient is φ = 495264000.

The previous prime is 539194657. The next prime is 539194699. The reversal of 539194661 is 166491935.

It is a cyclic number.

It is not a de Polignac number, because 539194661 - 2² = 539194657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539194631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119696 + ... + 124118.

It is an arithmetic number, because the mean of its divisors is an integer number (36551088).

Almost surely, 2^539194661 is an apocalyptic number.

It is an amenable number.

539194661 is a deficient number, since it is larger than the sum of its proper divisors (45622747).

539194661 is a wasteful number, since it uses less digits than its factorization.

539194661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612.

The product of its digits is 174960, while the sum is 44.

The square root of 539194661 is about 23220.5654754573. The cubic root of 539194661 is about 813.9202638685.

The spelling of 539194661 in words is "five hundred thirty-nine million, one hundred ninety-four thousand, six hundred sixty-one".