1961954248 has 16 divisors (see below), whose sum is σ = 3699930780. Its totient is φ = 975306048.

The previous prime is 1961954237. The next prime is 1961954261. The reversal of 1961954248 is 8424591691.

It can be written as a sum of positive squares in 2 ways, for example, as 1522716484 + 439237764 = 39022^2 + 20958^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707415 + ... + 710182.

Almost surely, 2^1961954248 is an apocalyptic number.

It is an amenable number.

1961954248 is a deficient number, since it is larger than the sum of its proper divisors (1737976532).

1961954248 is a wasteful number, since it uses less digits than its factorization.

1961954248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417776 (or 1417772 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 1961954248 is about 44293.9527249488. The cubic root of 1961954248 is about 1251.8807417359.

The spelling of 1961954248 in words is "one billion, nine hundred sixty-one million, nine hundred fifty-four thousand, two hundred forty-eight".