1628965356 has 12 divisors (see below), whose sum is σ = 3800919192. Its totient is φ = 542988448.

The previous prime is 1628965343. The next prime is 1628965357. The reversal of 1628965356 is 6535698261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1628965299 and 1628965308.

It is not an unprimeable number, because it can be changed into a prime (1628965357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67873545 + ... + 67873568.

It is an arithmetic number, because the mean of its divisors is an integer number (316743266).

Almost surely, 2^1628965356 is an apocalyptic number.

It is an amenable number.

1628965356 is an abundant number, since it is smaller than the sum of its proper divisors (2171953836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1628965356 is a wasteful number, since it uses less digits than its factorization.

1628965356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135747120 (or 135747118 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The square root of 1628965356 is about 40360.4429608992. The cubic root of 1628965356 is about 1176.6228623501.

The spelling of 1628965356 in words is "one billion, six hundred twenty-eight million, nine hundred sixty-five thousand, three hundred fifty-six".