2328781544 has 8 divisors (see below), whose sum is σ = 4366465410. Its totient is φ = 1164390768.

The previous prime is 2328781537. The next prime is 2328781549. The reversal of 2328781544 is 4451878232.

It can be written as a sum of positive squares in only one way, i.e., 2326904644 + 1876900 = 48238^2 + 1370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2328781495 and 2328781504.

It is not an unprimeable number, because it can be changed into a prime (2328781549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145548839 + ... + 145548854.

Almost surely, 2^2328781544 is an apocalyptic number.

It is an amenable number.

2328781544 is a deficient number, since it is larger than the sum of its proper divisors (2037683866).

2328781544 is a wasteful number, since it uses less digits than its factorization.

2328781544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291097699 (or 291097695 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 2328781544 is about 48257.4506579036. The cubic root of 2328781544 is about 1325.4893730962.

The spelling of 2328781544 in words is "two billion, three hundred twenty-eight million, seven hundred eighty-one thousand, five hundred forty-four".