1543323372 has 12 divisors (see below), whose sum is σ = 3601087896. Its totient is φ = 514441120.

The previous prime is 1543323367. The next prime is 1543323373. The reversal of 1543323372 is 2733233451.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1543323372² = 4763694061122900768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1543323373) 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, 64305129 + ... + 64305152.

It is an arithmetic number, because the mean of its divisors is an integer number (300090658).

Almost surely, 2^1543323372 is an apocalyptic number.

1543323372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1543323372 is an abundant number, since it is smaller than the sum of its proper divisors (2057764524).

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

1543323372 is a wasteful number, since it uses less digits than its factorization.

1543323372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128610288 (or 128610286 counting only the distinct ones).

The product of its digits is 45360, while the sum is 33.

The square root of 1543323372 is about 39285.1546006885. The cubic root of 1543323372 is about 1155.6304528309.

The spelling of 1543323372 in words is "one billion, five hundred forty-three million, three hundred twenty-three thousand, three hundred seventy-two".