1020631804 has 6 divisors (see below), whose sum is σ = 1786105664. Its totient is φ = 510315900.

The previous prime is 1020631793. The next prime is 1020631811. The reversal of 1020631804 is 4081360201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127578972 + ... + 127578979.

Almost surely, 2^1020631804 is an apocalyptic number.

It is an amenable number.

1020631804 is a deficient number, since it is larger than the sum of its proper divisors (765473860).

1020631804 is a wasteful number, since it uses less digits than its factorization.

1020631804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255157955 (or 255157953 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1020631804 is about 31947.3285894142. The cubic root of 1020631804 is about 1006.8305059607.

The spelling of 1020631804 in words is "one billion, twenty million, six hundred thirty-one thousand, eight hundred four".