1384725405 has 16 divisors (see below), whose sum is σ = 2532069504. Its totient is φ = 633017280.

The previous prime is 1384725371. The next prime is 1384725409. The reversal of 1384725405 is 5045274831.

It is not a de Polignac number, because 1384725405 - 2¹⁴ = 1384709021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384725409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6593826 + ... + 6594035.

It is an arithmetic number, because the mean of its divisors is an integer number (158254344).

Almost surely, 2^1384725405 is an apocalyptic number.

1384725405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1384725405 is a deficient number, since it is larger than the sum of its proper divisors (1147344099).

1384725405 is a wasteful number, since it uses less digits than its factorization.

1384725405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13187876.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 1384725405 is about 37211.8987018937. The cubic root of 1384725405 is about 1114.6055982726.

The spelling of 1384725405 in words is "one billion, three hundred eighty-four million, seven hundred twenty-five thousand, four hundred five".