1629750668 has 24 divisors (see below), whose sum is σ = 3510232992. Its totient is φ = 644736384.

The previous prime is 1629750667. The next prime is 1629750743. The reversal of 1629750668 is 8660579261.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1629750667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2238305 + ... + 2239032.

It is an arithmetic number, because the mean of its divisors is an integer number (146259708).

Almost surely, 2^1629750668 is an apocalyptic number.

It is an amenable number.

1629750668 is an abundant number, since it is smaller than the sum of its proper divisors (1880482324).

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

1629750668 is a wasteful number, since it uses less digits than its factorization.

1629750668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4477361 (or 4477359 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1629750668 is about 40370.1705223052. The cubic root of 1629750668 is about 1176.8119123305.

The spelling of 1629750668 in words is "one billion, six hundred twenty-nine million, seven hundred fifty thousand, six hundred sixty-eight".