1961331295 has 32 divisors (see below), whose sum is σ = 2936964096. Its totient is φ = 1221561600.

The previous prime is 1961331289. The next prime is 1961331331. The reversal of 1961331295 is 5921331691.

It is not a de Polignac number, because 1961331295 - 2³ = 1961331287 is a prime.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 802275 + ... + 804715.

It is an arithmetic number, because the mean of its divisors is an integer number (91780128).

Almost surely, 2^1961331295 is an apocalyptic number.

1961331295 is a deficient number, since it is larger than the sum of its proper divisors (975632801).

1961331295 is a wasteful number, since it uses less digits than its factorization.

1961331295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551.

The product of its digits is 43740, while the sum is 40.

The square root of 1961331295 is about 44286.9201345047. The cubic root of 1961331295 is about 1251.7482300801.

The spelling of 1961331295 in words is "one billion, nine hundred sixty-one million, three hundred thirty-one thousand, two hundred ninety-five".