161737801 has 2 divisors, whose sum is σ = 161737802. Its totient is φ = 161737800.

The previous prime is 161737769. The next prime is 161737811. The reversal of 161737801 is 108737161.

161737801 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 can be written as a sum of positive squares in only one way, i.e., 160047801 + 1690000 = 12651^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 161737801 - 2⁵ = 161737769 is a prime.

It is not a weakly prime, because it can be changed into another prime (161737811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80868900 + 80868901.

It is an arithmetic number, because the mean of its divisors is an integer number (80868901).

Almost surely, 2^161737801 is an apocalyptic number.

It is an amenable number.

161737801 is a deficient number, since it is larger than the sum of its proper divisors (1).

161737801 is an equidigital number, since it uses as much as digits as its factorization.

161737801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 161737801 is about 12717.6177407563. The cubic root of 161737801 is about 544.8419158256.

The spelling of 161737801 in words is "one hundred sixty-one million, seven hundred thirty-seven thousand, eight hundred one".