161151149 has 2 divisors, whose sum is σ = 161151150. Its totient is φ = 161151148.

The previous prime is 161151127. The next prime is 161151163. The reversal of 161151149 is 941151161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 42994249 = 10870^2 + 6557^2 .

It is a cyclic number.

It is not a de Polignac number, because 161151149 - 2⁸ = 161150893 is a prime.

It is equal to p_9035525 and since 161151149 and 9035525 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 (161151119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80575574 + 80575575.

It is an arithmetic number, because the mean of its divisors is an integer number (80575575).

Almost surely, 2^161151149 is an apocalyptic number.

It is an amenable number.

161151149 is a deficient number, since it is larger than the sum of its proper divisors (1).

161151149 is an equidigital number, since it uses as much as digits as its factorization.

161151149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 29.

The square root of 161151149 is about 12694.5322481768. The cubic root of 161151149 is about 544.1823713176.

The spelling of 161151149 in words is "one hundred sixty-one million, one hundred fifty-one thousand, one hundred forty-nine".