2782732378 has 4 divisors (see below), whose sum is σ = 4174098570. Its totient is φ = 1391366188.

The previous prime is 2782732369. The next prime is 2782732387. The reversal of 2782732378 is 8732372872.

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

It is an interprime number because it is at equal distance from previous prime (2782732369) and next prime (2782732387).

It can be written as a sum of positive squares in only one way, i.e., 2488712769 + 294019609 = 49887^2 + 17147^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695683093 + ... + 695683096.

Almost surely, 2^2782732378 is an apocalyptic number.

2782732378 is a deficient number, since it is larger than the sum of its proper divisors (1391366192).

2782732378 is a wasteful number, since it uses less digits than its factorization.

2782732378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391366191.

The product of its digits is 1580544, while the sum is 49.

The square root of 2782732378 is about 52751.6101934339. The cubic root of 2782732378 is about 1406.5563867509.

The spelling of 2782732378 in words is "two billion, seven hundred eighty-two million, seven hundred thirty-two thousand, three hundred seventy-eight".