1628116791 has 8 divisors (see below), whose sum is σ = 2480939904. Its totient is φ = 930352440.

The previous prime is 1628116757. The next prime is 1628116793. The reversal of 1628116791 is 1976118261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1628116791 - 2¹¹ = 1628114743 is a prime.

It is a super-2 number, since 2×1628116791² = 5301528570272275362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628116793) 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, 38764665 + ... + 38764706.

It is an arithmetic number, because the mean of its divisors is an integer number (310117488).

Almost surely, 2^1628116791 is an apocalyptic number.

1628116791 is a deficient number, since it is larger than the sum of its proper divisors (852823113).

1628116791 is an equidigital number, since it uses as much as digits as its factorization.

1628116791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77529381.

The product of its digits is 36288, while the sum is 42.

The square root of 1628116791 is about 40349.9292564436. The cubic root of 1628116791 is about 1176.4185170180.

The spelling of 1628116791 in words is "one billion, six hundred twenty-eight million, one hundred sixteen thousand, seven hundred ninety-one".