1603160158981 has 2 divisors, whose sum is σ = 1603160158982. Its totient is φ = 1603160158980.

The previous prime is 1603160158973. The next prime is 1603160159059. The reversal of 1603160158981 is 1898510613061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1026219650625 + 576940508356 = 1013025^2 + 759566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603160158981 - 2³ = 1603160158973 is a prime.

It is a super-2 number, since 2×1603160158981² (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 (1603160158081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801580079490 + 801580079491.

It is an arithmetic number, because the mean of its divisors is an integer number (801580079491).

Almost surely, 2^{1603160158981} is an apocalyptic number.

It is an amenable number.

1603160158981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603160158981 is an equidigital number, since it uses as much as digits as its factorization.

1603160158981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 49.

The spelling of 1603160158981 in words is "one trillion, six hundred three billion, one hundred sixty million, one hundred fifty-eight thousand, nine hundred eighty-one".