1961910760 has 16 divisors (see below), whose sum is σ = 4414299300. Its totient is φ = 784764288.

The previous prime is 1961910751. The next prime is 1961910767. The reversal of 1961910760 is 670191691.

It can be written as a sum of positive squares in 2 ways, for example, as 1710815044 + 251095716 = 41362^2 + 15846^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 49047769 = 1961910760 / (1 + 9 + 6 + 1 + 9 + 1 + 0 + 7 + 6 + 0).

It is not an unprimeable number, because it can be changed into a prime (1961910767) 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, 24523845 + ... + 24523924.

Almost surely, 2^1961910760 is an apocalyptic number.

1961910760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1961910760 is an abundant number, since it is smaller than the sum of its proper divisors (2452388540).

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

1961910760 is a wasteful number, since it uses less digits than its factorization.

1961910760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49047780 (or 49047776 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 1961910760 is about 44293.4618200023. The cubic root of 1961910760 is about 1251.8714920822.

The spelling of 1961910760 in words is "one billion, nine hundred sixty-one million, nine hundred ten thousand, seven hundred sixty".