378500531 has 4 divisors (see below), whose sum is σ = 379291200. Its totient is φ = 377709864.

The previous prime is 378500477. The next prime is 378500543. The reversal of 378500531 is 135005873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378500531 - 2¹⁴ = 378484147 is a prime.

It is a super-2 number, since 2×378500531² = 286525303934563922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378505531) 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, 394616 + ... + 395573.

It is an arithmetic number, because the mean of its divisors is an integer number (94822800).

Almost surely, 2^378500531 is an apocalyptic number.

378500531 is a deficient number, since it is larger than the sum of its proper divisors (790669).

378500531 is an equidigital number, since it uses as much as digits as its factorization.

378500531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790668.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 378500531 is about 19455.0901051627. The cubic root of 378500531 is about 723.3616789466.

The spelling of 378500531 in words is "three hundred seventy-eight million, five hundred thousand, five hundred thirty-one".