1965730426 has 24 divisors (see below), whose sum is σ = 3244851540. Its totient is φ = 892457280.

The previous prime is 1965730421. The next prime is 1965730433. The reversal of 1965730426 is 6240375691.

It can be written as a sum of positive squares in 2 ways, for example, as 1788867025 + 176863401 = 42295^2 + 13299^2 .

It is a super-2 number, since 2×1965730426² = 7728192215404282952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1965730421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222420 + ... + 231088.

Almost surely, 2^1965730426 is an apocalyptic number.

1965730426 is a deficient number, since it is larger than the sum of its proper divisors (1279121114).

1965730426 is a wasteful number, since it uses less digits than its factorization.

1965730426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9630 (or 9619 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 1965730426 is about 44336.5585719054. The cubic root of 1965730426 is about 1252.6833929465.

The spelling of 1965730426 in words is "one billion, nine hundred sixty-five million, seven hundred thirty thousand, four hundred twenty-six".