151113181 has 2 divisors, whose sum is σ = 151113182. Its totient is φ = 151113180.

The previous prime is 151113121. The next prime is 151113233. The reversal of 151113181 is 181311151.

151113181 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., 81540900 + 69572281 = 9030^2 + 8341^2 .

It is a cyclic number.

It is not a de Polignac number, because 151113181 - 2¹⁷ = 150982109 is a prime.

It is a super-2 number, since 2×151113181² = 45670386943877522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151113121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75556590 + 75556591.

It is an arithmetic number, because the mean of its divisors is an integer number (75556591).

Almost surely, 2^151113181 is an apocalyptic number.

It is an amenable number.

151113181 is a deficient number, since it is larger than the sum of its proper divisors (1).

151113181 is an equidigital number, since it uses as much as digits as its factorization.

151113181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 22.

The square root of 151113181 is about 12292.8101343834. The cubic root of 151113181 is about 532.6404146743.

The spelling of 151113181 in words is "one hundred fifty-one million, one hundred thirteen thousand, one hundred eighty-one".