161513983 has 2 divisors, whose sum is σ = 161513984. Its totient is φ = 161513982.

The previous prime is 161513971. The next prime is 161514007. The reversal of 161513983 is 389315161.

161513983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161513983 - 2¹³ = 161505791 is a prime.

It is equal to p_9054586 and since 161513983 and 9054586 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161513783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80756991 + 80756992.

It is an arithmetic number, because the mean of its divisors is an integer number (80756992).

Almost surely, 2^161513983 is an apocalyptic number.

161513983 is a deficient number, since it is larger than the sum of its proper divisors (1).

161513983 is an equidigital number, since it uses as much as digits as its factorization.

161513983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 161513983 is about 12708.8151690077. The cubic root of 161513983 is about 544.5904765185.

The spelling of 161513983 in words is "one hundred sixty-one million, five hundred thirteen thousand, nine hundred eighty-three".