1782979061 has 4 divisors (see below), whose sum is σ = 1785216972. Its totient is φ = 1780741152.

The previous prime is 1782979049. The next prime is 1782979063. The reversal of 1782979061 is 1609792871.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411684100 + 1371294961 = 20290^2 + 37031^2 .

It is a cyclic number.

It is not a de Polignac number, because 1782979061 - 2²² = 1778784757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1782979063) 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, 1117760 + ... + 1119353.

It is an arithmetic number, because the mean of its divisors is an integer number (446304243).

Almost surely, 2^1782979061 is an apocalyptic number.

It is an amenable number.

1782979061 is a deficient number, since it is larger than the sum of its proper divisors (2237911).

1782979061 is an equidigital number, since it uses as much as digits as its factorization.

1782979061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237910.

The product of its (nonzero) digits is 381024, while the sum is 50.

The square root of 1782979061 is about 42225.3367186101. The cubic root of 1782979061 is about 1212.5939981118.

The spelling of 1782979061 in words is "one billion, seven hundred eighty-two million, nine hundred seventy-nine thousand, sixty-one".