1787049216 has 216 divisors, whose sum is σ = 5580120000. Its totient is φ = 569327616.

The previous prime is 1787049151. The next prime is 1787049221. The reversal of 1787049216 is 6129407871.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (216).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1430160 + ... + 1431408.

Almost surely, 2^1787049216 is an apocalyptic number.

1787049216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1787049216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2790060000).

1787049216 is an abundant number, since it is smaller than the sum of its proper divisors (3793070784).

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

1787049216 is an equidigital number, since it uses as much as digits as its factorization.

1787049216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1787049216 is about 42273.5048937275. The cubic root of 1787049216 is about 1213.5159933780.

The spelling of 1787049216 in words is "one billion, seven hundred eighty-seven million, forty-nine thousand, two hundred sixteen".