1383020265 has 16 divisors (see below), whose sum is σ = 2413999296. Its totient is φ = 670555200.

The previous prime is 1383020263. The next prime is 1383020269. The reversal of 1383020265 is 5620203831.

It is not a de Polignac number, because 1383020265 - 2¹ = 1383020263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1383020263) 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, 4190806 + ... + 4191135.

It is an arithmetic number, because the mean of its divisors is an integer number (150874956).

Almost surely, 2^1383020265 is an apocalyptic number.

1383020265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1383020265 is a deficient number, since it is larger than the sum of its proper divisors (1030979031).

1383020265 is a wasteful number, since it uses less digits than its factorization.

1383020265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8381960.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1383020265 is about 37188.9804243139. The cubic root of 1383020265 is about 1114.1479048248.

The spelling of 1383020265 in words is "one billion, three hundred eighty-three million, twenty thousand, two hundred sixty-five".