1783990825 has 12 divisors (see below), whose sum is σ = 2288430540. Its totient is φ = 1377978560.

The previous prime is 1783990771. The next prime is 1783990861. The reversal of 1783990825 is 5280993871.

It can be written as a sum of positive squares in 6 ways, for example, as 361494169 + 1422496656 = 19013^2 + 37716^2 .

It is not a de Polignac number, because 1783990825 - 2¹¹ = 1783988777 is a prime.

It is a super-3 number, since 3×1783990825³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229614 + ... + 1231063.

It is an arithmetic number, because the mean of its divisors is an integer number (190702545).

Almost surely, 2^1783990825 is an apocalyptic number.

It is an amenable number.

1783990825 is a deficient number, since it is larger than the sum of its proper divisors (504439715).

1783990825 is a wasteful number, since it uses less digits than its factorization.

1783990825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460716 (or 2460711 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 1783990825 is about 42237.3155515357. The cubic root of 1783990825 is about 1212.8233197362.

The spelling of 1783990825 in words is "one billion, seven hundred eighty-three million, nine hundred ninety thousand, eight hundred twenty-five".