1395515385 has 60 divisors (see below), whose sum is σ = 2749778724. Its totient is φ = 676589760.

The previous prime is 1395515383. The next prime is 1395515411. The reversal of 1395515385 is 5835155931.

1395515385 is a `hidden beast` number, since 13 + 9 + 551 + 5 + 3 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 559842921 + 835672464 = 23661^2 + 28908^2 .

It is not a de Polignac number, because 1395515385 - 2¹ = 1395515383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1395515385.

It is not an unprimeable number, because it can be changed into a prime (1395515383) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 34767 + ... + 63243.

Almost surely, 2^1395515385 is an apocalyptic number.

1395515385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1395515385 is a deficient number, since it is larger than the sum of its proper divisors (1354263339).

1395515385 is a wasteful number, since it uses less digits than its factorization.

1395515385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28516 (or 28496 counting only the distinct ones).

The product of its digits is 405000, while the sum is 45.

The square root of 1395515385 is about 37356.5976100608. The cubic root of 1395515385 is about 1117.4931669327.

The spelling of 1395515385 in words is "one billion, three hundred ninety-five million, five hundred fifteen thousand, three hundred eighty-five".