15349240945 has 4 divisors (see below), whose sum is σ = 18419089140. Its totient is φ = 12279392752.

The previous prime is 15349240943. The next prime is 15349240997. The reversal of 15349240945 is 54904294351.

15349240945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54904294351 = 1213 ⋅45263227.

It can be written as a sum of positive squares in 2 ways, for example, as 8762457664 + 6586783281 = 93608^2 + 81159^2 .

It is a cyclic number.

It is not a de Polignac number, because 15349240945 - 2¹ = 15349240943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15349240895 and 15349240904.

It is not an unprimeable number, because it can be changed into a prime (15349240943) 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 3 ways as a sum of consecutive naturals, for example, 1534924090 + ... + 1534924099.

It is an arithmetic number, because the mean of its divisors is an integer number (4604772285).

Almost surely, 2^15349240945 is an apocalyptic number.

It is an amenable number.

15349240945 is a deficient number, since it is larger than the sum of its proper divisors (3069848195).

15349240945 is an equidigital number, since it uses as much as digits as its factorization.

15349240945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069848194.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 15349240945 in words is "fifteen billion, three hundred forty-nine million, two hundred forty thousand, nine hundred forty-five".