1378074771 has 6 divisors (see below), whose sum is σ = 1990552460. Its totient is φ = 918716508.

The previous prime is 1378074767. The next prime is 1378074787. The reversal of 1378074771 is 1774708731.

It is not a de Polignac number, because 1378074771 - 2² = 1378074767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378074871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76559701 + ... + 76559718.

Almost surely, 2^1378074771 is an apocalyptic number.

1378074771 is a deficient number, since it is larger than the sum of its proper divisors (612477689).

1378074771 is a wasteful number, since it uses less digits than its factorization.

1378074771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153119425 (or 153119422 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 45.

The square root of 1378074771 is about 37122.4294867672. The cubic root of 1378074771 is about 1112.8183045090.

The spelling of 1378074771 in words is "one billion, three hundred seventy-eight million, seventy-four thousand, seven hundred seventy-one".