1965983630 has 16 divisors (see below), whose sum is σ = 3810983904. Its totient is φ = 725901600.

The previous prime is 1965983611. The next prime is 1965983711. The reversal of 1965983630 is 363895691.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7561346 + ... + 7561605.

It is an arithmetic number, because the mean of its divisors is an integer number (238186494).

Almost surely, 2^1965983630 is an apocalyptic number.

1965983630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1965983630 is a deficient number, since it is larger than the sum of its proper divisors (1845000274).

1965983630 is a wasteful number, since it uses less digits than its factorization.

1965983630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15122971.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 1965983630 is about 44339.4139564338. The cubic root of 1965983630 is about 1252.7371763178.

The spelling of 1965983630 in words is "one billion, nine hundred sixty-five million, nine hundred eighty-three thousand, six hundred thirty".