1378213485 has 16 divisors (see below), whose sum is σ = 2405609280. Its totient is φ = 668224640.

The previous prime is 1378213457. The next prime is 1378213513. The reversal of 1378213485 is 5843128731.

It is an interprime number because it is at equal distance from previous prime (1378213457) and next prime (1378213513).

It is not a de Polignac number, because 1378213485 - 2¹⁰ = 1378212461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4176240 + ... + 4176569.

It is an arithmetic number, because the mean of its divisors is an integer number (150350580).

Almost surely, 2^1378213485 is an apocalyptic number.

1378213485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378213485 is a deficient number, since it is larger than the sum of its proper divisors (1027395795).

1378213485 is a wasteful number, since it uses less digits than its factorization.

1378213485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352828.

The product of its digits is 161280, while the sum is 42.

The square root of 1378213485 is about 37124.2977711364. The cubic root of 1378213485 is about 1112.8556412105.

The spelling of 1378213485 in words is "one billion, three hundred seventy-eight million, two hundred thirteen thousand, four hundred eighty-five".