1618601380031 has 2 divisors, whose sum is σ = 1618601380032. Its totient is φ = 1618601380030.

The previous prime is 1618601380021. The next prime is 1618601380049. The reversal of 1618601380031 is 1300831068161.

It is a weak prime.

It is an emirp because it is prime and its reverse (1300831068161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1618601380031 is a prime.

It is a super-2 number, since 2×1618601380031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618601380021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809300690015 + 809300690016.

It is an arithmetic number, because the mean of its divisors is an integer number (809300690016).

Almost surely, 2^{1618601380031} is an apocalyptic number.

1618601380031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618601380031 is an equidigital number, since it uses as much as digits as its factorization.

1618601380031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 1618601380031 in words is "one trillion, six hundred eighteen billion, six hundred one million, three hundred eighty thousand, thirty-one".