1628882087 has 4 divisors (see below), whose sum is σ = 1861579536. Its totient is φ = 1396184640.

The previous prime is 1628882083. The next prime is 1628882107. The reversal of 1628882087 is 7802888261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1628882087 - 2² = 1628882083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628882083) 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, 116348714 + ... + 116348727.

It is an arithmetic number, because the mean of its divisors is an integer number (465394884).

Almost surely, 2^1628882087 is an apocalyptic number.

1628882087 is a deficient number, since it is larger than the sum of its proper divisors (232697449).

1628882087 is an equidigital number, since it uses as much as digits as its factorization.

1628882087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232697448.

The product of its (nonzero) digits is 688128, while the sum is 50.

The square root of 1628882087 is about 40359.4113807424. The cubic root of 1628882087 is about 1176.6028132479.

The spelling of 1628882087 in words is "one billion, six hundred twenty-eight million, eight hundred eighty-two thousand, eighty-seven".