2372781521 has 16 divisors (see below), whose sum is σ = 2604107328. Its totient is φ = 2144102400.

The previous prime is 2372781491. The next prime is 2372781533. The reversal of 2372781521 is 1251872732.

It is not a de Polignac number, because 2372781521 - 2⁶ = 2372781457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2372784521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1795541 + ... + 1796861.

It is an arithmetic number, because the mean of its divisors is an integer number (162756708).

Almost surely, 2^2372781521 is an apocalyptic number.

It is an amenable number.

2372781521 is a deficient number, since it is larger than the sum of its proper divisors (231325807).

2372781521 is a wasteful number, since it uses less digits than its factorization.

2372781521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192.

The product of its digits is 47040, while the sum is 38.

The square root of 2372781521 is about 48711.2052920065. The cubic root of 2372781521 is about 1333.7852708734.

The spelling of 2372781521 in words is "two billion, three hundred seventy-two million, seven hundred eighty-one thousand, five hundred twenty-one".