1961011260 has 72 divisors (see below), whose sum is σ = 6405977760. Its totient is φ = 482709888.

The previous prime is 1961011249. The next prime is 1961011271. The reversal of 1961011260 is 621101691.

1961011260 is a `hidden beast` number, since 19 + 610 + 11 + 26 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1961011249) and next prime (1961011271).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 416680 + ... + 421359.

Almost surely, 2^1961011260 is an apocalyptic number.

1961011260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1961011260 is an abundant number, since it is smaller than the sum of its proper divisors (4444966500).

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

1961011260 is a wasteful number, since it uses less digits than its factorization.

1961011260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838067 (or 838062 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1961011260 is about 44283.3067870953. The cubic root of 1961011260 is about 1251.6801428176.

The spelling of 1961011260 in words is "one billion, nine hundred sixty-one million, eleven thousand, two hundred sixty".