961539530 has 32 divisors (see below), whose sum is σ = 1979824896. Its totient is φ = 329370624.

The previous prime is 961539529. The next prime is 961539637. The reversal of 961539530 is 35935169.

961539530 = T₄₂₂₇ + T₄₂₂₈ + ... + T₄₃₃₁.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79547 + ... + 90833.

It is an arithmetic number, because the mean of its divisors is an integer number (61869528).

Almost surely, 2^961539530 is an apocalyptic number.

961539530 is an abundant number, since it is smaller than the sum of its proper divisors (1018285366).

961539530 is a wasteful number, since it uses less digits than its factorization.

961539530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12518.

The product of its (nonzero) digits is 109350, while the sum is 41.

The square root of 961539530 is about 31008.7008757220. The cubic root of 961539530 is about 987.0118824632.

The spelling of 961539530 in words is "nine hundred sixty-one million, five hundred thirty-nine thousand, five hundred thirty".