1964029440 has 80 divisors (see below), whose sum is σ = 6278781168. Its totient is φ = 523739136.

The previous prime is 1964029439. The next prime is 1964029453. The reversal of 1964029440 is 449204691.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120187 + ... + 135546.

Almost surely, 2^1964029440 is an apocalyptic number.

1964029440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1964029440 is an abundant number, since it is smaller than the sum of its proper divisors (4314751728).

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

1964029440 is an equidigital number, since it uses as much as digits as its factorization.

1964029440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255759 (or 255743 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1964029440 is about 44317.3717632262. The cubic root of 1964029440 is about 1252.3219646468.

The spelling of 1964029440 in words is "one billion, nine hundred sixty-four million, twenty-nine thousand, four hundred forty".