1628790227 has 2 divisors, whose sum is σ = 1628790228. Its totient is φ = 1628790226.

The previous prime is 1628790211. The next prime is 1628790269. The reversal of 1628790227 is 7220978261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1628790227 - 2⁴ = 1628790211 is a prime.

It is a super-3 number, since 3×1628790227³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1628795227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814395113 + 814395114.

It is an arithmetic number, because the mean of its divisors is an integer number (814395114).

Almost surely, 2^1628790227 is an apocalyptic number.

1628790227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628790227 is an equidigital number, since it uses as much as digits as its factorization.

1628790227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 1628790227 is about 40358.2733401715. The cubic root of 1628790227 is about 1176.5806948541.

The spelling of 1628790227 in words is "one billion, six hundred twenty-eight million, seven hundred ninety thousand, two hundred twenty-seven".