1788922242 has 12 divisors (see below), whose sum is σ = 3875998230. Its totient is φ = 596307408.

The previous prime is 1788922199. The next prime is 1788922253. The reversal of 1788922242 is 2422298871.

It is a happy number.

1788922242 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 1633695561 + 155226681 = 40419^2 + 12459^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49692267 + ... + 49692302.

Almost surely, 2^1788922242 is an apocalyptic number.

1788922242 is an abundant number, since it is smaller than the sum of its proper divisors (2087075988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1788922242 is a wasteful number, since it uses less digits than its factorization.

1788922242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99384577 (or 99384574 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1788922242 is about 42295.6527553365. The cubic root of 1788922242 is about 1213.9398118434.

The spelling of 1788922242 in words is "one billion, seven hundred eighty-eight million, nine hundred twenty-two thousand, two hundred forty-two".