1021608466 has 4 divisors (see below), whose sum is σ = 1532412702. Its totient is φ = 510804232.

The previous prime is 1021608463. The next prime is 1021608547. The reversal of 1021608466 is 6648061201.

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

It can be written as a sum of positive squares in only one way, i.e., 539586441 + 482022025 = 23229^2 + 21955^2 .

It is not an unprimeable number, because it can be changed into a prime (1021608461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255402115 + ... + 255402118.

Almost surely, 2^1021608466 is an apocalyptic number.

1021608466 is a deficient number, since it is larger than the sum of its proper divisors (510804236).

1021608466 is an equidigital number, since it uses as much as digits as its factorization.

1021608466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510804235.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1021608466 is about 31962.6104378225. The cubic root of 1021608466 is about 1007.1515553348.

Adding to 1021608466 its reverse (6648061201), we get a palindrome (7669669667).

The spelling of 1021608466 in words is "one billion, twenty-one million, six hundred eight thousand, four hundred sixty-six".