538645998 has 32 divisors (see below), whose sum is σ = 1177368192. Its totient is φ = 162928800.

The previous prime is 538645997. The next prime is 538645999. The reversal of 538645998 is 899546835.

It is an interprime number because it is at equal distance from previous prime (538645997) and next prime (538645999).

It is a super-2 number, since 2×538645998² = 580279022322832008, 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 (538645997) 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, 30540 + ... + 44832.

It is an arithmetic number, because the mean of its divisors is an integer number (36792756).

Almost surely, 2^538645998 is an apocalyptic number.

538645998 is an abundant number, since it is smaller than the sum of its proper divisors (638722194).

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

538645998 is a wasteful number, since it uses less digits than its factorization.

538645998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880.

The product of its digits is 9331200, while the sum is 57.

The square root of 538645998 is about 23208.7483074810. The cubic root of 538645998 is about 813.6440992341.

The spelling of 538645998 in words is "five hundred thirty-eight million, six hundred forty-five thousand, nine hundred ninety-eight".