963521513 has 4 divisors (see below), whose sum is σ = 964288080. Its totient is φ = 962754948.

The previous prime is 963521501. The next prime is 963521539. The reversal of 963521513 is 315125369.

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.

It is a cyclic number.

It is not a de Polignac number, because 963521513 - 2¹⁰ = 963520489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (963521593) 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, 381395 + ... + 383912.

It is an arithmetic number, because the mean of its divisors is an integer number (241072020).

Almost surely, 2^963521513 is an apocalyptic number.

It is an amenable number.

963521513 is a deficient number, since it is larger than the sum of its proper divisors (766567).

963521513 is a wasteful number, since it uses less digits than its factorization.

963521513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766566.

The product of its digits is 24300, while the sum is 35.

The square root of 963521513 is about 31040.6429218211. The cubic root of 963521513 is about 987.6895797535.

The spelling of 963521513 in words is "nine hundred sixty-three million, five hundred twenty-one thousand, five hundred thirteen".