2149543572 has 48 divisors (see below), whose sum is σ = 5605032384. Its totient is φ = 635488000.

The previous prime is 2149543567. The next prime is 2149543579. The reversal of 2149543572 is 2753459412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149543579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193179 + ... + 204002.

It is an arithmetic number, because the mean of its divisors is an integer number (116771508).

Almost surely, 2^2149543572 is an apocalyptic number.

2149543572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2149543572 is an abundant number, since it is smaller than the sum of its proper divisors (3455488812).

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

2149543572 is a wasteful number, since it uses less digits than its factorization.

2149543572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397240 (or 397238 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 2149543572 is about 46363.1704265358. The cubic root of 2149543572 is about 1290.5715417021.

The spelling of 2149543572 in words is "two billion, one hundred forty-nine million, five hundred forty-three thousand, five hundred seventy-two".