1461320615 has 4 divisors (see below), whose sum is σ = 1753584744. Its totient is φ = 1169056488.

The previous prime is 1461320603. The next prime is 1461320669. The reversal of 1461320615 is 5160231641.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1461320615 - 2⁶ = 1461320551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146132057 + ... + 146132066.

It is an arithmetic number, because the mean of its divisors is an integer number (438396186).

Almost surely, 2^1461320615 is an apocalyptic number.

1461320615 is a deficient number, since it is larger than the sum of its proper divisors (292264129).

1461320615 is an equidigital number, since it uses as much as digits as its factorization.

1461320615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292264128.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1461320615 is about 38227.2234801326. The cubic root of 1461320615 is about 1134.7891384435.

The spelling of 1461320615 in words is "one billion, four hundred sixty-one million, three hundred twenty thousand, six hundred fifteen".