161893007 has 2 divisors, whose sum is σ = 161893008. Its totient is φ = 161893006.

The previous prime is 161893003. The next prime is 161893009. The reversal of 161893007 is 700398161.

161893007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161893007 - 2² = 161893003 is a prime.

Together with 161893009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161893003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80946503 + 80946504.

It is an arithmetic number, because the mean of its divisors is an integer number (80946504).

Almost surely, 2^161893007 is an apocalyptic number.

161893007 is a deficient number, since it is larger than the sum of its proper divisors (1).

161893007 is an equidigital number, since it uses as much as digits as its factorization.

161893007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 161893007 is about 12723.7182851555. The cubic root of 161893007 is about 545.0161395776.

The spelling of 161893007 in words is "one hundred sixty-one million, eight hundred ninety-three thousand, seven".