5145913249 has 4 divisors (see below), whose sum is σ = 5146966420. Its totient is φ = 5144860080.

The previous prime is 5145913219. The next prime is 5145913327. The reversal of 5145913249 is 9423195415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9423195415 = 5 ⋅1884639083.

It can be written as a sum of positive squares in 2 ways, for example, as 4220841024 + 925072225 = 64968^2 + 30415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5145913249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5145913219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519222 + ... + 529039.

It is an arithmetic number, because the mean of its divisors is an integer number (1286741605).

Almost surely, 2^5145913249 is an apocalyptic number.

It is an amenable number.

5145913249 is a deficient number, since it is larger than the sum of its proper divisors (1053171).

5145913249 is a wasteful number, since it uses less digits than its factorization.

5145913249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053170.

The product of its digits is 194400, while the sum is 43.

The square root of 5145913249 is about 71735.0210775741. The cubic root of 5145913249 is about 1726.4505895580.

The spelling of 5145913249 in words is "five billion, one hundred forty-five million, nine hundred thirteen thousand, two hundred forty-nine".