1411778478 has 16 divisors (see below), whose sum is σ = 3080244096. Its totient is φ = 427811640.

The previous prime is 1411778441. The next prime is 1411778483. The reversal of 1411778478 is 8748771141.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10695226 + ... + 10695357.

It is an arithmetic number, because the mean of its divisors is an integer number (192515256).

Almost surely, 2^1411778478 is an apocalyptic number.

1411778478 is an abundant number, since it is smaller than the sum of its proper divisors (1668465618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1411778478 is a wasteful number, since it uses less digits than its factorization.

1411778478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21390599.

The product of its digits is 351232, while the sum is 48.

The square root of 1411778478 is about 37573.6407338975. The cubic root of 1411778478 is about 1121.8174356065.

The spelling of 1411778478 in words is "one billion, four hundred eleven million, seven hundred seventy-eight thousand, four hundred seventy-eight".