1530390065 has 16 divisors (see below), whose sum is σ = 1949294160. Its totient is φ = 1149450240.

The previous prime is 1530390061. The next prime is 1530390073. The reversal of 1530390065 is 5600930351.

It can be written as a sum of positive squares in 8 ways, for example, as 113018161 + 1417371904 = 10631^2 + 37648^2 .

It is not a de Polignac number, because 1530390065 - 2² = 1530390061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1530390061) 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, 12755 + ... + 56775.

It is an arithmetic number, because the mean of its divisors is an integer number (121830885).

Almost surely, 2^1530390065 is an apocalyptic number.

It is an amenable number.

1530390065 is a deficient number, since it is larger than the sum of its proper divisors (418904095).

1530390065 is a wasteful number, since it uses less digits than its factorization.

1530390065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44452.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 1530390065 is about 39120.2002167678. The cubic root of 1530390065 is about 1152.3932679567.

The spelling of 1530390065 in words is "one billion, five hundred thirty million, three hundred ninety thousand, sixty-five".