1628381902948 has 6 divisors (see below), whose sum is σ = 2849668330166. Its totient is φ = 814190951472.

The previous prime is 1628381902921. The next prime is 1628381902957. The reversal of 1628381902948 is 8492091838261.

It can be written as a sum of positive squares in only one way, i.e., 906898145344 + 721483757604 = 952312^2 + 849402^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203547737865 + ... + 203547737872.

Almost surely, 2^{1628381902948} is an apocalyptic number.

It is an amenable number.

1628381902948 is a deficient number, since it is larger than the sum of its proper divisors (1221286427218).

1628381902948 is a wasteful number, since it uses less digits than its factorization.

1628381902948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407095475741 (or 407095475739 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 1628381902948 in words is "one trillion, six hundred twenty-eight billion, three hundred eighty-one million, nine hundred two thousand, nine hundred forty-eight".