1384378825 has 6 divisors (see below), whose sum is σ = 1716629774. Its totient is φ = 1107503040.

The previous prime is 1384378819. The next prime is 1384378837. The reversal of 1384378825 is 5288734831.

It can be written as a sum of positive squares in 3 ways, for example, as 164762896 + 1219615929 = 12836^2 + 34923^2 .

It is not a de Polignac number, because 1384378825 - 2¹³ = 1384370633 is a prime.

It is a super-2 number, since 2×1384378825² = 3833009462216761250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27687552 + ... + 27687601.

Almost surely, 2^1384378825 is an apocalyptic number.

It is an amenable number.

1384378825 is a deficient number, since it is larger than the sum of its proper divisors (332250949).

1384378825 is an equidigital number, since it uses as much as digits as its factorization.

1384378825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55375163 (or 55375158 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 1384378825 is about 37207.2415666628. The cubic root of 1384378825 is about 1114.5125997522.

The spelling of 1384378825 in words is "one billion, three hundred eighty-four million, three hundred seventy-eight thousand, eight hundred twenty-five".