1378832747 has 8 divisors (see below), whose sum is σ = 1419640992. Its totient is φ = 1338366400.

The previous prime is 1378832743. The next prime is 1378832759. The reversal of 1378832747 is 7472388731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1378832747 - 2² = 1378832743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1378832695 and 1378832704.

It is not an unprimeable number, because it can be changed into a prime (1378832743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77279 + ... + 93432.

It is an arithmetic number, because the mean of its divisors is an integer number (177455124).

Almost surely, 2^1378832747 is an apocalyptic number.

1378832747 is a deficient number, since it is larger than the sum of its proper divisors (40808245).

1378832747 is a wasteful number, since it uses less digits than its factorization.

1378832747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170949.

The product of its digits is 1580544, while the sum is 50.

The square root of 1378832747 is about 37132.6372211832. The cubic root of 1378832747 is about 1113.0222931907.

The spelling of 1378832747 in words is "one billion, three hundred seventy-eight million, eight hundred thirty-two thousand, seven hundred forty-seven".