538154820 has 96 divisors (see below), whose sum is σ = 1913452800. Its totient is φ = 123005952.

The previous prime is 538154797. The next prime is 538154821. The reversal of 538154820 is 28451835.

It is a happy number.

It is a super-2 number, since 2×538154820² = 579221220578464800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (538154821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67405 + ... + 74964.

It is an arithmetic number, because the mean of its divisors is an integer number (19931800).

Almost surely, 2^538154820 is an apocalyptic number.

It is an amenable number.

538154820 is an abundant number, since it is smaller than the sum of its proper divisors (1375297980).

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

538154820 is a wasteful number, since it uses less digits than its factorization.

538154820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142394 (or 142386 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 538154820 is about 23198.1641515013. The cubic root of 538154820 is about 813.3967100275.

The spelling of 538154820 in words is "five hundred thirty-eight million, one hundred fifty-four thousand, eight hundred twenty".