1962640321 has 8 divisors (see below), whose sum is σ = 2121774080. Its totient is φ = 1809090288.

The previous prime is 1962640307. The next prime is 1962640333. The reversal of 1962640321 is 1230462691.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1962640321 - 2⁵ = 1962640289 is a prime.

It is a super-2 number, since 2×1962640321² = 7703914059229966082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1962640391) 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 7 ways as a sum of consecutive naturals, for example, 1395201 + ... + 1396606.

It is an arithmetic number, because the mean of its divisors is an integer number (265221760).

Almost surely, 2^1962640321 is an apocalyptic number.

It is an amenable number.

1962640321 is a deficient number, since it is larger than the sum of its proper divisors (159133759).

1962640321 is a wasteful number, since it uses less digits than its factorization.

1962640321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791863.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1962640321 is about 44301.6965927943. The cubic root of 1962640321 is about 1252.0266475307.

The spelling of 1962640321 in words is "one billion, nine hundred sixty-two million, six hundred forty thousand, three hundred twenty-one".