1376530065 has 32 divisors (see below), whose sum is σ = 2461858560. Its totient is φ = 729741312.

The previous prime is 1376530039. The next prime is 1376530091. The reversal of 1376530065 is 5600356731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1376530039) and next prime (1376530091).

It is not a de Polignac number, because 1376530065 - 2⁸ = 1376529809 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7984 + ... + 53073.

It is an arithmetic number, because the mean of its divisors is an integer number (76933080).

Almost surely, 2^1376530065 is an apocalyptic number.

1376530065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376530065 is a deficient number, since it is larger than the sum of its proper divisors (1085328495).

1376530065 is a wasteful number, since it uses less digits than its factorization.

1376530065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61238 (or 61232 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 1376530065 is about 37101.6180913987. The cubic root of 1376530065 is about 1112.4023571248.

Adding to 1376530065 its reverse (5600356731), we get a palindrome (6976886796).

It can be divided in two parts, 1376 and 530065, that added together give a 12-th power (531441 = 3¹²).

The spelling of 1376530065 in words is "one billion, three hundred seventy-six million, five hundred thirty thousand, sixty-five".