538405819 has 8 divisors (see below), whose sum is σ = 615837920. Its totient is φ = 461102976.

The previous prime is 538405817. The next prime is 538405859. The reversal of 538405819 is 918504835.

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 538405819 - 2¹ = 538405817 is a prime.

It is a super-2 number, since 2×538405819² = 579761651866121522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538405817) 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, 23214 + ... + 40195.

It is an arithmetic number, because the mean of its divisors is an integer number (76979740).

Almost surely, 2^538405819 is an apocalyptic number.

538405819 is a deficient number, since it is larger than the sum of its proper divisors (77432101).

538405819 is a wasteful number, since it uses less digits than its factorization.

538405819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64629.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 538405819 is about 23203.5734101453. The cubic root of 538405819 is about 813.5231482572.

The spelling of 538405819 in words is "five hundred thirty-eight million, four hundred five thousand, eight hundred nineteen".