538477380 has 288 divisors, whose sum is σ = 2064351744. Its totient is φ = 110702592.

The previous prime is 538477367. The next prime is 538477399. The reversal of 538477380 is 83774835.

538477380 is a `hidden beast` number, since 538 + 47 + 73 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 492114 + ... + 493206.

It is an arithmetic number, because the mean of its divisors is an integer number (7167888).

Almost surely, 2^538477380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538477380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032175872).

538477380 is an abundant number, since it is smaller than the sum of its proper divisors (1525874364).

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

538477380 is a wasteful number, since it uses less digits than its factorization.

538477380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 538477380 is about 23205.1153843285. The cubic root of 538477380 is about 813.5591891945.

The spelling of 538477380 in words is "five hundred thirty-eight million, four hundred seventy-seven thousand, three hundred eighty".