538074391 has 4 divisors (see below), whose sum is σ = 548226792. Its totient is φ = 527921992.

The previous prime is 538074389. The next prime is 538074403. The reversal of 538074391 is 193470835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193470835 = 5 ⋅38694167.

It is a cyclic number.

It is not a de Polignac number, because 538074391 - 2¹ = 538074389 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 (538074791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5076121 + ... + 5076226.

It is an arithmetic number, because the mean of its divisors is an integer number (137056698).

Almost surely, 2^538074391 is an apocalyptic number.

538074391 is a deficient number, since it is larger than the sum of its proper divisors (10152401).

538074391 is a wasteful number, since it uses less digits than its factorization.

538074391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152400.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 538074391 is about 23196.4305659298. The cubic root of 538074391 is about 813.3561864081.

The spelling of 538074391 in words is "five hundred thirty-eight million, seventy-four thousand, three hundred ninety-one".