151086181 has 2 divisors, whose sum is σ = 151086182. Its totient is φ = 151086180.

The previous prime is 151086179. The next prime is 151086217. The reversal of 151086181 is 181680151.

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., 102212100 + 48874081 = 10110^2 + 6991^2 .

It is a cyclic number.

It is not a de Polignac number, because 151086181 - 2¹ = 151086179 is a prime.

It is a super-2 number, since 2×151086181² = 45654068178329522, which contains 22 as substring.

Together with 151086179, 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 (151086121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75543090 + 75543091.

It is an arithmetic number, because the mean of its divisors is an integer number (75543091).

Almost surely, 2^151086181 is an apocalyptic number.

It is an amenable number.

151086181 is a deficient number, since it is larger than the sum of its proper divisors (1).

151086181 is an equidigital number, since it uses as much as digits as its factorization.

151086181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 31.

The square root of 151086181 is about 12291.7118824027. The cubic root of 151086181 is about 532.6086897828.

The spelling of 151086181 in words is "one hundred fifty-one million, eighty-six thousand, one hundred eighty-one".