5149649465 has 4 divisors (see below), whose sum is σ = 6179579364. Its totient is φ = 4119719568.

The previous prime is 5149649459. The next prime is 5149649471. The reversal of 5149649465 is 5649469415.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5149649459) and next prime (5149649471).

It can be written as a sum of positive squares in 2 ways, for example, as 1320886336 + 3828763129 = 36344^2 + 61877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5149649465 is a prime.

It is a super-2 number, since 2×5149649465² = 53037779224749572450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 514964942 + ... + 514964951.

It is an arithmetic number, because the mean of its divisors is an integer number (1544894841).

Almost surely, 2^5149649465 is an apocalyptic number.

It is an amenable number.

5149649465 is a deficient number, since it is larger than the sum of its proper divisors (1029929899).

5149649465 is a wasteful number, since it uses less digits than its factorization.

5149649465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029929898.

The product of its digits is 4665600, while the sum is 53.

The square root of 5149649465 is about 71761.0581374049. The cubic root of 5149649465 is about 1726.8683211649.

The spelling of 5149649465 in words is "five billion, one hundred forty-nine million, six hundred forty-nine thousand, four hundred sixty-five".