1721364514 has 4 divisors (see below), whose sum is σ = 2582046774. Its totient is φ = 860682256.

The previous prime is 1721364509. The next prime is 1721364521. The reversal of 1721364514 is 4154631271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4154631271 = 7 ⋅593518753.

It can be written as a sum of positive squares in only one way, i.e., 933608025 + 787756489 = 30555^2 + 28067^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1721364514.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430341127 + ... + 430341130.

Almost surely, 2^1721364514 is an apocalyptic number.

1721364514 is a deficient number, since it is larger than the sum of its proper divisors (860682260).

1721364514 is an equidigital number, since it uses as much as digits as its factorization.

1721364514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860682259.

The product of its digits is 20160, while the sum is 34.

The square root of 1721364514 is about 41489.3301223339. The cubic root of 1721364514 is about 1198.4620376055.

Adding to 1721364514 its reverse (4154631271), we get a palindrome (5875995785).

The spelling of 1721364514 in words is "one billion, seven hundred twenty-one million, three hundred sixty-four thousand, five hundred fourteen".