7214451861 has 4 divisors (see below), whose sum is σ = 9619269152. Its totient is φ = 4809634572.

The previous prime is 7214451773. The next prime is 7214451863. The reversal of 7214451861 is 1681544127.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1681544127 = 3 ⋅560514709.

It is not a de Polignac number, because 7214451861 - 2⁷ = 7214451733 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 (7214451863) 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, 1202408641 + ... + 1202408646.

It is an arithmetic number, because the mean of its divisors is an integer number (2404817288).

Almost surely, 2^7214451861 is an apocalyptic number.

It is an amenable number.

7214451861 is a deficient number, since it is larger than the sum of its proper divisors (2404817291).

7214451861 is a wasteful number, since it uses less digits than its factorization.

7214451861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404817290.

The product of its digits is 53760, while the sum is 39.

The square root of 7214451861 is about 84937.9294602829. The cubic root of 7214451861 is about 1932.2698611742.

Adding to 7214451861 its reverse (1681544127), we get a palindrome (8895995988).

The spelling of 7214451861 in words is "seven billion, two hundred fourteen million, four hundred fifty-one thousand, eight hundred sixty-one".