1618449013403 has 2 divisors, whose sum is σ = 1618449013404. Its totient is φ = 1618449013402.

The previous prime is 1618449013303. The next prime is 1618449013409. The reversal of 1618449013403 is 3043109448161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1618449013403 - 2⁸ = 1618449013147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618449013409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809224506701 + 809224506702.

It is an arithmetic number, because the mean of its divisors is an integer number (809224506702).

Almost surely, 2^{1618449013403} is an apocalyptic number.

1618449013403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618449013403 is an equidigital number, since it uses as much as digits as its factorization.

1618449013403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 1618449013403 in words is "one trillion, six hundred eighteen billion, four hundred forty-nine million, thirteen thousand, four hundred three".