1008216904 has 8 divisors (see below), whose sum is σ = 1890406710. Its totient is φ = 504108448.

The previous prime is 1008216889. The next prime is 1008216917. The reversal of 1008216904 is 4096128001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 756360004 + 251856900 = 27502^2 + 15870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1008216904² = 2033002651022690432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63013549 + ... + 63013564.

Almost surely, 2^1008216904 is an apocalyptic number.

It is an amenable number.

1008216904 is a deficient number, since it is larger than the sum of its proper divisors (882189806).

1008216904 is a wasteful number, since it uses less digits than its factorization.

1008216904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126027119 (or 126027115 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1008216904 is about 31752.4314659523. The cubic root of 1008216904 is about 1002.7315001138.

The spelling of 1008216904 in words is "one billion, eight million, two hundred sixteen thousand, nine hundred four".