5213812649 has 4 divisors (see below), whose sum is σ = 5215675536. Its totient is φ = 5211949764.

The previous prime is 5213812609. The next prime is 5213812657. The reversal of 5213812649 is 9462183125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5213812649 - 2¹² = 5213808553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5213812609) 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, 927239 + ... + 932844.

It is an arithmetic number, because the mean of its divisors is an integer number (1303918884).

Almost surely, 2^5213812649 is an apocalyptic number.

It is an amenable number.

5213812649 is a deficient number, since it is larger than the sum of its proper divisors (1862887).

5213812649 is a wasteful number, since it uses less digits than its factorization.

5213812649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862886.

The product of its digits is 103680, while the sum is 41.

The square root of 5213812649 is about 72206.7354822249. The cubic root of 5213812649 is about 1734.0108360848.

The spelling of 5213812649 in words is "five billion, two hundred thirteen million, eight hundred twelve thousand, six hundred forty-nine".