1788228001 has 12 divisors (see below), whose sum is σ = 2080919748. Its totient is φ = 1532224512.

The previous prime is 1788227999. The next prime is 1788228007. The reversal of 1788228001 is 1008228871.

It can be written as a sum of positive squares in 2 ways, for example, as 1228432401 + 559795600 = 35049^2 + 23660^2 .

It is not a de Polignac number, because 1788228001 - 2¹ = 1788227999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1788228007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200305 + ... + 209041.

It is an arithmetic number, because the mean of its divisors is an integer number (173409979).

Almost surely, 2^1788228001 is an apocalyptic number.

It is an amenable number.

1788228001 is a deficient number, since it is larger than the sum of its proper divisors (292691747).

1788228001 is an equidigital number, since it uses as much as digits as its factorization.

1788228001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928 (or 12921 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 1788228001 is about 42287.4449571028. Note that the first 3 decimals coincide. The cubic root of 1788228001 is about 1213.7827571631.

The spelling of 1788228001 in words is "one billion, seven hundred eighty-eight million, two hundred twenty-eight thousand, one".