1628162798 has 4 divisors (see below), whose sum is σ = 2442244200. Its totient is φ = 814081398.

The previous prime is 1628162797. The next prime is 1628162807. The reversal of 1628162798 is 8972618261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8972618261 = 179 ⋅50126359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628162791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407040698 + ... + 407040701.

It is an arithmetic number, because the mean of its divisors is an integer number (610561050).

Almost surely, 2^1628162798 is an apocalyptic number.

1628162798 is a deficient number, since it is larger than the sum of its proper divisors (814081402).

1628162798 is an equidigital number, since it uses as much as digits as its factorization.

1628162798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814081401.

The product of its digits is 580608, while the sum is 50.

The square root of 1628162798 is about 40350.4993525483. The cubic root of 1628162798 is about 1176.4295979137.

The spelling of 1628162798 in words is "one billion, six hundred twenty-eight million, one hundred sixty-two thousand, seven hundred ninety-eight".