2778252382 has 4 divisors (see below), whose sum is σ = 4167378576. Its totient is φ = 1389126190.

The previous prime is 2778252341. The next prime is 2778252401. The reversal of 2778252382 is 2832528772.

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

It is a super-3 number, since 3×2778252382³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694563094 + ... + 694563097.

It is an arithmetic number, because the mean of its divisors is an integer number (1041844644).

Almost surely, 2^2778252382 is an apocalyptic number.

2778252382 is a deficient number, since it is larger than the sum of its proper divisors (1389126194).

2778252382 is a wasteful number, since it uses less digits than its factorization.

2778252382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389126193.

The product of its digits is 752640, while the sum is 46.

The square root of 2778252382 is about 52709.1299681564. The cubic root of 2778252382 is about 1405.8011636179.

The spelling of 2778252382 in words is "two billion, seven hundred seventy-eight million, two hundred fifty-two thousand, three hundred eighty-two".