1961712844 has 36 divisors (see below), whose sum is σ = 4300683744. Its totient is φ = 776061216.

The previous prime is 1961712827. The next prime is 1961712853. The reversal of 1961712844 is 4482171691.

It is a self number, because there is not a number n which added to its sum of digits gives 1961712844.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382404 + ... + 387499.

Almost surely, 2^1961712844 is an apocalyptic number.

1961712844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1961712844 is an abundant number, since it is smaller than the sum of its proper divisors (2338970900).

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

1961712844 is a wasteful number, since it uses less digits than its factorization.

1961712844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769934 (or 769925 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 1961712844 is about 44291.2276190218. The cubic root of 1961712844 is about 1251.8293947325.

The spelling of 1961712844 in words is "one billion, nine hundred sixty-one million, seven hundred twelve thousand, eight hundred forty-four".