1461722513 has 4 divisors (see below), whose sum is σ = 1492823040. Its totient is φ = 1430621988.

The previous prime is 1461722503. The next prime is 1461722533. The reversal of 1461722513 is 3152271641.

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 1461722513 - 2⁸ = 1461722257 is a prime.

It is a super-2 number, since 2×1461722513² = 4273265410022070338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1461722513.

It is not an unprimeable number, because it can be changed into a prime (1461722503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15550193 + ... + 15550286.

It is an arithmetic number, because the mean of its divisors is an integer number (373205760).

Almost surely, 2^1461722513 is an apocalyptic number.

It is an amenable number.

1461722513 is a deficient number, since it is larger than the sum of its proper divisors (31100527).

1461722513 is an equidigital number, since it uses as much as digits as its factorization.

1461722513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31100526.

The product of its digits is 10080, while the sum is 32.

The square root of 1461722513 is about 38232.4798175583. The cubic root of 1461722513 is about 1134.8931602616.

The spelling of 1461722513 in words is "one billion, four hundred sixty-one million, seven hundred twenty-two thousand, five hundred thirteen".