1530636697 has 4 divisors (see below), whose sum is σ = 1539187920. Its totient is φ = 1522085476.

The previous prime is 1530636691. The next prime is 1530636707. The reversal of 1530636697 is 7966360351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7966360351 = 3947 ⋅2018333.

It is a cyclic number.

It is not a de Polignac number, because 1530636697 - 2¹⁵ = 1530603929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1530636691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4275343 + ... + 4275700.

It is an arithmetic number, because the mean of its divisors is an integer number (384796980).

Almost surely, 2^1530636697 is an apocalyptic number.

It is an amenable number.

1530636697 is a deficient number, since it is larger than the sum of its proper divisors (8551223).

1530636697 is an equidigital number, since it uses as much as digits as its factorization.

1530636697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551222.

The product of its (nonzero) digits is 612360, while the sum is 46.

The square root of 1530636697 is about 39123.3523231330. The cubic root of 1530636697 is about 1152.4551697765.

It can be divided in two parts, 15306 and 36697, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 1530636697 in words is "one billion, five hundred thirty million, six hundred thirty-six thousand, six hundred ninety-seven".