1618376315249 has 8 divisors (see below), whose sum is σ = 1623073402440. Its totient is φ = 1613685888000.

The previous prime is 1618376315201. The next prime is 1618376315251. The reversal of 1618376315249 is 9425136738161.

It can be written as a sum of positive squares in 4 ways, for example, as 1014919234624 + 603457080625 = 1007432^2 + 776825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1618376315249 - 2⁸ = 1618376314993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1618376315194 and 1618376315203.

It is not an unprimeable number, because it can be changed into a prime (1618376315849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178072 + ... + 2150489.

It is an arithmetic number, because the mean of its divisors is an integer number (202884175305).

Almost surely, 2^{1618376315249} is an apocalyptic number.

It is an amenable number.

1618376315249 is a deficient number, since it is larger than the sum of its proper divisors (4697087191).

1618376315249 is an equidigital number, since it uses as much as digits as its factorization.

1618376315249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329971.

The product of its digits is 6531840, while the sum is 56.

The spelling of 1618376315249 in words is "one trillion, six hundred eighteen billion, three hundred seventy-six million, three hundred fifteen thousand, two hundred forty-nine".