1964043672 has 16 divisors (see below), whose sum is σ = 4910109240. Its totient is φ = 654681216.

The previous prime is 1964043671. The next prime is 1964043689. The reversal of 1964043672 is 2763404691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964043671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40917553 + ... + 40917600.

Almost surely, 2^1964043672 is an apocalyptic number.

1964043672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1964043672 is an abundant number, since it is smaller than the sum of its proper divisors (2946065568).

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

1964043672 is a wasteful number, since it uses less digits than its factorization.

1964043672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81835162 (or 81835158 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 1964043672 is about 44317.5323320241. The cubic root of 1964043672 is about 1252.3249895510.

The spelling of 1964043672 in words is "one billion, nine hundred sixty-four million, forty-three thousand, six hundred seventy-two".