1630856884 has 6 divisors (see below), whose sum is σ = 2853999554. Its totient is φ = 815428440.

The previous prime is 1630856873. The next prime is 1630856893. The reversal of 1630856884 is 4886580361.

It can be written as a sum of positive squares in only one way, i.e., 1492276900 + 138579984 = 38630^2 + 11772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203857107 + ... + 203857114.

Almost surely, 2^1630856884 is an apocalyptic number.

It is an amenable number.

1630856884 is a deficient number, since it is larger than the sum of its proper divisors (1223142670).

1630856884 is a wasteful number, since it uses less digits than its factorization.

1630856884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407714225 (or 407714223 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 1630856884 is about 40383.8691063647. The cubic root of 1630856884 is about 1177.0781112779.

The spelling of 1630856884 in words is "one billion, six hundred thirty million, eight hundred fifty-six thousand, eight hundred eighty-four".