1378674663 has 16 divisors (see below), whose sum is σ = 1867689216. Its totient is φ = 904438080.

The previous prime is 1378674659. The next prime is 1378674683. The reversal of 1378674663 is 3664768731.

It is not a de Polignac number, because 1378674663 - 2² = 1378674659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378674613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110595 + ... + 122427.

It is an arithmetic number, because the mean of its divisors is an integer number (116730576).

Almost surely, 2^1378674663 is an apocalyptic number.

1378674663 is a deficient number, since it is larger than the sum of its proper divisors (489014553).

1378674663 is a wasteful number, since it uses less digits than its factorization.

1378674663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12454.

The product of its digits is 3048192, while the sum is 51.

The square root of 1378674663 is about 37130.5085206222. The cubic root of 1378674663 is about 1112.9797553409.

The spelling of 1378674663 in words is "one billion, three hundred seventy-eight million, six hundred seventy-four thousand, six hundred sixty-three".