1002166538 has 8 divisors (see below), whose sum is σ = 1504840032. Its totient is φ = 500553196.

The previous prime is 1002166519. The next prime is 1002166547. The reversal of 1002166538 is 8356612001.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262670 + ... + 266457.

It is an arithmetic number, because the mean of its divisors is an integer number (188105004).

Almost surely, 2^1002166538 is an apocalyptic number.

1002166538 is a deficient number, since it is larger than the sum of its proper divisors (502673494).

1002166538 is an equidigital number, since it uses as much as digits as its factorization.

1002166538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530076.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1002166538 is about 31657.0140411252. The cubic root of 1002166538 is about 1000.7216584172.

Adding to 1002166538 its reverse (8356612001), we get a palindrome (9358778539).

The spelling of 1002166538 in words is "one billion, two million, one hundred sixty-six thousand, five hundred thirty-eight".