1961540304 has 40 divisors (see below), whose sum is σ = 5069071392. Its totient is φ = 653619840.

The previous prime is 1961540299. The next prime is 1961540323. The reversal of 1961540304 is 4030451691.

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, 187927 + ... + 198089.

Almost surely, 2^1961540304 is an apocalyptic number.

It is an amenable number.

1961540304 is an abundant number, since it is smaller than the sum of its proper divisors (3107531088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1961540304 is a wasteful number, since it uses less digits than its factorization.

1961540304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14195 (or 14189 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1961540304 is about 44289.2797864224. The cubic root of 1961540304 is about 1251.7926926268.

Adding to 1961540304 its reverse (4030451691), we get a palindrome (5991991995).

The spelling of 1961540304 in words is "one billion, nine hundred sixty-one million, five hundred forty thousand, three hundred four".