1788395252 has 12 divisors (see below), whose sum is σ = 3576790560. Its totient is φ = 766455096.

The previous prime is 1788395251. The next prime is 1788395293. The reversal of 1788395252 is 2525938871.

It is a happy number.

1788395252 is an admirable number.

It is a super-2 number, since 2×1788395252² = 6396715154752287008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1788395252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1788395251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31935602 + ... + 31935657.

It is an arithmetic number, because the mean of its divisors is an integer number (298065880).

Almost surely, 2^1788395252 is an apocalyptic number.

It is an amenable number.

1788395252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1788395252 is a wasteful number, since it uses less digits than its factorization.

1788395252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63871270 (or 63871268 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The square root of 1788395252 is about 42289.4224599958. The cubic root of 1788395252 is about 1213.8205972393.

The spelling of 1788395252 in words is "one billion, seven hundred eighty-eight million, three hundred ninety-five thousand, two hundred fifty-two".