538490378 has 8 divisors (see below), whose sum is σ = 829566372. Its totient is φ = 261968256.

The previous prime is 538490377. The next prime is 538490417. The reversal of 538490378 is 873094835.

It can be written as a sum of positive squares in 2 ways, for example, as 413430889 + 125059489 = 20333^2 + 11183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (538490377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638375 + ... + 3638522.

Almost surely, 2^538490378 is an apocalyptic number.

538490378 is a deficient number, since it is larger than the sum of its proper divisors (291075994).

538490378 is a wasteful number, since it uses less digits than its factorization.

538490378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276936.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 538490378 is about 23205.3954501965. The cubic root of 538490378 is about 813.5657351564.

The spelling of 538490378 in words is "five hundred thirty-eight million, four hundred ninety thousand, three hundred seventy-eight".