2781925466 has 4 divisors (see below), whose sum is σ = 4172888202. Its totient is φ = 1390962732.

The previous prime is 2781925423. The next prime is 2781925469. The reversal of 2781925466 is 6645291872.

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

It can be written as a sum of positive squares in only one way, i.e., 1806675025 + 975250441 = 42505^2 + 31229^2 .

It is not an unprimeable number, because it can be changed into a prime (2781925469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695481365 + ... + 695481368.

Almost surely, 2^2781925466 is an apocalyptic number.

2781925466 is a deficient number, since it is larger than the sum of its proper divisors (1390962736).

2781925466 is a wasteful number, since it uses less digits than its factorization.

2781925466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390962735.

The product of its digits is 1451520, while the sum is 50.

The square root of 2781925466 is about 52743.9614173983. The cubic root of 2781925466 is about 1406.4204200351.

The spelling of 2781925466 in words is "two billion, seven hundred eighty-one million, nine hundred twenty-five thousand, four hundred sixty-six".