538902461 has 4 divisors (see below), whose sum is σ = 539063772. Its totient is φ = 538741152.

The previous prime is 538902457. The next prime is 538902473. The reversal of 538902461 is 164209835.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164209835 = 5 ⋅32841967.

It can be written as a sum of positive squares in 2 ways, for example, as 336722500 + 202179961 = 18350^2 + 14219^2 .

It is a cyclic number.

It is not a de Polignac number, because 538902461 - 2² = 538902457 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 (538904461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75536 + ... + 82361.

It is an arithmetic number, because the mean of its divisors is an integer number (134765943).

Almost surely, 2^538902461 is an apocalyptic number.

It is an amenable number.

538902461 is a deficient number, since it is larger than the sum of its proper divisors (161311).

538902461 is a wasteful number, since it uses less digits than its factorization.

538902461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161310.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 538902461 is about 23214.2727863700. The cubic root of 538902461 is about 813.7732109317.

The spelling of 538902461 in words is "five hundred thirty-eight million, nine hundred two thousand, four hundred sixty-one".