538194918 has 16 divisors (see below), whose sum is σ = 1079496000. Its totient is φ = 178880616.

The previous prime is 538194907. The next prime is 538194919. The reversal of 538194918 is 819491835.

It is a super-2 number, since 2×538194918² = 579307539522053448, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538194919) 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, 127168 + ... + 131331.

It is an arithmetic number, because the mean of its divisors is an integer number (67468500).

Almost surely, 2^538194918 is an apocalyptic number.

538194918 is an abundant number, since it is smaller than the sum of its proper divisors (541301082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

538194918 is a wasteful number, since it uses less digits than its factorization.

538194918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258851.

The product of its digits is 311040, while the sum is 48.

The square root of 538194918 is about 23199.0283848268. The cubic root of 538194918 is about 813.4169116313.

The spelling of 538194918 in words is "five hundred thirty-eight million, one hundred ninety-four thousand, nine hundred eighteen".