2781474446 has 4 divisors (see below), whose sum is σ = 4172211672. Its totient is φ = 1390737222.

The previous prime is 2781474427. The next prime is 2781474457. The reversal of 2781474446 is 6444741872.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2781474446.

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, 695368610 + ... + 695368613.

It is an arithmetic number, because the mean of its divisors is an integer number (1043052918).

Almost surely, 2^2781474446 is an apocalyptic number.

2781474446 is a deficient number, since it is larger than the sum of its proper divisors (1390737226).

2781474446 is a wasteful number, since it uses less digits than its factorization.

2781474446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390737225.

The product of its digits is 1204224, while the sum is 47.

The square root of 2781474446 is about 52739.6856835533. The cubic root of 2781474446 is about 1406.3444105675.

The spelling of 2781474446 in words is "two billion, seven hundred eighty-one million, four hundred seventy-four thousand, four hundred forty-six".