1781660482 has 24 divisors (see below), whose sum is σ = 3192844284. Its totient is φ = 742930272.

The previous prime is 1781660423. The next prime is 1781660483. The reversal of 1781660482 is 2840661871.

It can be written as a sum of positive squares in 2 ways, for example, as 1724823961 + 56836521 = 41531^2 + 7539^2 .

It is not an unprimeable number, because it can be changed into a prime (1781660483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242053 + ... + 249304.

Almost surely, 2^1781660482 is an apocalyptic number.

1781660482 is a deficient number, since it is larger than the sum of its proper divisors (1411183802).

1781660482 is a wasteful number, since it uses less digits than its factorization.

1781660482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491410 (or 491403 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 1781660482 is about 42209.7202312453. The cubic root of 1781660482 is about 1212.2950050151.

The spelling of 1781660482 in words is "one billion, seven hundred eighty-one million, six hundred sixty thousand, four hundred eighty-two".