1006487538 has 32 divisors (see below), whose sum is σ = 2347497600. Its totient is φ = 287567280.

The previous prime is 1006487507. The next prime is 1006487539. The reversal of 1006487538 is 8357846001.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1006487538.

It is not an unprimeable number, because it can be changed into a prime (1006487539) 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, 242473 + ... + 246588.

It is an arithmetic number, because the mean of its divisors is an integer number (73359300).

Almost surely, 2^1006487538 is an apocalyptic number.

1006487538 is an abundant number, since it is smaller than the sum of its proper divisors (1341010062).

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

1006487538 is an equidigital number, since it uses as much as digits as its factorization.

1006487538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489087 (or 489073 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1006487538 is about 31725.1877535815. The cubic root of 1006487538 is about 1002.1578529879.

The spelling of 1006487538 in words is "one billion, six million, four hundred eighty-seven thousand, five hundred thirty-eight".