2131549772 has 24 divisors (see below), whose sum is σ = 4070509632. Its totient is φ = 968603600.

The previous prime is 2131549741. The next prime is 2131549787. The reversal of 2131549772 is 2779451312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252947 + ... + 261237.

It is an arithmetic number, because the mean of its divisors is an integer number (169604568).

Almost surely, 2^2131549772 is an apocalyptic number.

2131549772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2131549772 is a deficient number, since it is larger than the sum of its proper divisors (1938959860).

2131549772 is a wasteful number, since it uses less digits than its factorization.

2131549772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14149 (or 14147 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 2131549772 is about 46168.7098801775. The cubic root of 2131549772 is about 1286.9603274639.

The spelling of 2131549772 in words is "two billion, one hundred thirty-one million, five hundred forty-nine thousand, seven hundred seventy-two".