149767381 has 2 divisors, whose sum is σ = 149767382. Its totient is φ = 149767380.

The previous prime is 149767369. The next prime is 149767393. The reversal of 149767381 is 183767941.

149767381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (149767369) and next prime (149767393).

It can be written as a sum of positive squares in only one way, i.e., 149572900 + 194481 = 12230^2 + 441^2 .

It is a cyclic number.

It is not a de Polignac number, because 149767381 - 2⁵ = 149767349 is a prime.

It is a super-2 number, since 2×149767381² = 44860536823198322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149767361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74883690 + 74883691.

It is an arithmetic number, because the mean of its divisors is an integer number (74883691).

Almost surely, 2^149767381 is an apocalyptic number.

It is an amenable number.

149767381 is a deficient number, since it is larger than the sum of its proper divisors (1).

149767381 is an equidigital number, since it uses as much as digits as its factorization.

149767381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 149767381 is about 12237.9483983223. The cubic root of 149767381 is about 531.0544818508.

The spelling of 149767381 in words is "one hundred forty-nine million, seven hundred sixty-seven thousand, three hundred eighty-one".