1378454788 has 24 divisors (see below), whose sum is σ = 2540462400. Its totient is φ = 652642848.

The previous prime is 1378454761. The next prime is 1378454797. The reversal of 1378454788 is 8874548731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280206 + ... + 285082.

It is an arithmetic number, because the mean of its divisors is an integer number (105852600).

Almost surely, 2^1378454788 is an apocalyptic number.

It is an amenable number.

1378454788 is a deficient number, since it is larger than the sum of its proper divisors (1162007612).

1378454788 is a wasteful number, since it uses less digits than its factorization.

1378454788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8619 (or 8617 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 55.

The square root of 1378454788 is about 37127.5475624232. The cubic root of 1378454788 is about 1112.9205851245.

The spelling of 1378454788 in words is "one billion, three hundred seventy-eight million, four hundred fifty-four thousand, seven hundred eighty-eight".