1788525481 has 2 divisors, whose sum is σ = 1788525482. Its totient is φ = 1788525480.

The previous prime is 1788525463. The next prime is 1788525503. The reversal of 1788525481 is 1845258871.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1676165481 + 112360000 = 40941^2 + 10600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1788525481 - 2¹⁷ = 1788394409 is a prime.

It is a super-2 number, since 2×1788525481² = 6397646792372562722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1788525181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894262740 + 894262741.

It is an arithmetic number, because the mean of its divisors is an integer number (894262741).

Almost surely, 2^1788525481 is an apocalyptic number.

It is an amenable number.

1788525481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1788525481 is an equidigital number, since it uses as much as digits as its factorization.

1788525481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 716800, while the sum is 49.

The square root of 1788525481 is about 42290.9621668744. The cubic root of 1788525481 is about 1213.8500595567.

The spelling of 1788525481 in words is "one billion, seven hundred eighty-eight million, five hundred twenty-five thousand, four hundred eighty-one".