2781145468 has 6 divisors (see below), whose sum is σ = 4867004576. Its totient is φ = 1390572732.

The previous prime is 2781145457. The next prime is 2781145469. The reversal of 2781145468 is 8645411872.

It is a super-2 number, since 2×2781145468² = 15469540228353878048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781145469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347643180 + ... + 347643187.

Almost surely, 2^2781145468 is an apocalyptic number.

It is an amenable number.

2781145468 is a deficient number, since it is larger than the sum of its proper divisors (2085859108).

2781145468 is a wasteful number, since it uses less digits than its factorization.

2781145468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695286371 (or 695286369 counting only the distinct ones).

The product of its digits is 430080, while the sum is 46.

The square root of 2781145468 is about 52736.5667066031. The cubic root of 2781145468 is about 1406.2889634031.

The spelling of 2781145468 in words is "two billion, seven hundred eighty-one million, one hundred forty-five thousand, four hundred sixty-eight".