1961969706 has 12 divisors (see below), whose sum is σ = 4250934402. Its totient is φ = 653989896.

The previous prime is 1961969701. The next prime is 1961969719. The reversal of 1961969706 is 6079691691.

1961969706 is a `hidden beast` number, since 19 + 619 + 6 + 9 + 7 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1545197481 + 416772225 = 39309^2 + 20415^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1961969701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54499141 + ... + 54499176.

Almost surely, 2^1961969706 is an apocalyptic number.

1961969706 is an abundant number, since it is smaller than the sum of its proper divisors (2288964696).

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

1961969706 is a wasteful number, since it uses less digits than its factorization.

1961969706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108998325 (or 108998322 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 1961969706 is about 44294.1272179507. The cubic root of 1961969706 is about 1251.8840295328.

The spelling of 1961969706 in words is "one billion, nine hundred sixty-one million, nine hundred sixty-nine thousand, seven hundred six".