7211634149 has 4 divisors (see below), whose sum is σ = 7212330636. Its totient is φ = 7210937664.

The previous prime is 7211634139. The next prime is 7211634151. The reversal of 7211634149 is 9414361127.

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

It can be written as a sum of positive squares in 2 ways, for example, as 139665124 + 7071969025 = 11818^2 + 84095^2 .

It is a cyclic number.

It is not a de Polignac number, because 7211634149 - 2²⁰ = 7210585573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7211634139) 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, 332474 + ... + 353499.

It is an arithmetic number, because the mean of its divisors is an integer number (1803082659).

Almost surely, 2^7211634149 is an apocalyptic number.

It is an amenable number.

7211634149 is a deficient number, since it is larger than the sum of its proper divisors (696487).

7211634149 is a wasteful number, since it uses less digits than its factorization.

7211634149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696486.

The product of its digits is 36288, while the sum is 38.

The square root of 7211634149 is about 84921.3409514946. The cubic root of 7211634149 is about 1932.0182694592.

The spelling of 7211634149 in words is "seven billion, two hundred eleven million, six hundred thirty-four thousand, one hundred forty-nine".