1513781872903 has 2 divisors, whose sum is σ = 1513781872904. Its totient is φ = 1513781872902.

The previous prime is 1513781872853. The next prime is 1513781872913. The reversal of 1513781872903 is 3092781873151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1513781872903 - 2⁹ = 1513781872391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513781872913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756890936451 + 756890936452.

It is an arithmetic number, because the mean of its divisors is an integer number (756890936452).

Almost surely, 2^{1513781872903} is an apocalyptic number.

1513781872903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513781872903 is an equidigital number, since it uses as much as digits as its factorization.

1513781872903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 1513781872903 in words is "one trillion, five hundred thirteen billion, seven hundred eighty-one million, eight hundred seventy-two thousand, nine hundred three".