1378170946 has 8 divisors (see below), whose sum is σ = 2074562064. Its totient is φ = 686650260.

The previous prime is 1378170923. The next prime is 1378170949. The reversal of 1378170946 is 6490718731.

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

It is a junction number, because it is equal to n+sod(n) for n = 1378170896 and 1378170905.

It is not an unprimeable number, because it can be changed into a prime (1378170949) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1216900 + ... + 1218031.

It is an arithmetic number, because the mean of its divisors is an integer number (259320258).

Almost surely, 2^1378170946 is an apocalyptic number.

1378170946 is a deficient number, since it is larger than the sum of its proper divisors (696391118).

1378170946 is a wasteful number, since it uses less digits than its factorization.

1378170946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435216.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1378170946 is about 37123.7248400534. The cubic root of 1378170946 is about 1112.8441915443.

The spelling of 1378170946 in words is "one billion, three hundred seventy-eight million, one hundred seventy thousand, nine hundred forty-six".