1961580814 has 16 divisors (see below), whose sum is σ = 3006885888. Its totient is φ = 959312152.

The previous prime is 1961580791. The next prime is 1961580821. The reversal of 1961580814 is 4180851691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165639 + ... + 177085.

It is an arithmetic number, because the mean of its divisors is an integer number (187930368).

Almost surely, 2^1961580814 is an apocalyptic number.

1961580814 is a deficient number, since it is larger than the sum of its proper divisors (1045305074).

1961580814 is a wasteful number, since it uses less digits than its factorization.

1961580814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 1961580814 is about 44289.7371182083. The cubic root of 1961580814 is about 1251.8013099657.

The spelling of 1961580814 in words is "one billion, nine hundred sixty-one million, five hundred eighty thousand, eight hundred fourteen".