1628736117 has 4 divisors (see below), whose sum is σ = 2171648160. Its totient is φ = 1085824076.

The previous prime is 1628736101. The next prime is 1628736121. The reversal of 1628736117 is 7116378261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7116378261 = 3 ⋅2372126087.

It is a cyclic number.

It is not a de Polignac number, because 1628736117 - 2⁴ = 1628736101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628736517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271456017 + ... + 271456022.

It is an arithmetic number, because the mean of its divisors is an integer number (542912040).

Almost surely, 2^1628736117 is an apocalyptic number.

It is an amenable number.

1628736117 is a deficient number, since it is larger than the sum of its proper divisors (542912043).

1628736117 is an equidigital number, since it uses as much as digits as its factorization.

1628736117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542912042.

The product of its digits is 84672, while the sum is 42.

The square root of 1628736117 is about 40357.6029640017. The cubic root of 1628736117 is about 1176.5676656571.

The spelling of 1628736117 in words is "one billion, six hundred twenty-eight million, seven hundred thirty-six thousand, one hundred seventeen".