149586881 has 2 divisors, whose sum is σ = 149586882. Its totient is φ = 149586880.

The previous prime is 149586869. The next prime is 149586883. The reversal of 149586881 is 188685941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146289025 + 3297856 = 12095^2 + 1816^2 .

It is a cyclic number.

It is not a de Polignac number, because 149586881 - 2⁶ = 149586817 is a prime.

It is a super-2 number, since 2×149586881² = 44752469934616322, which contains 22 as substring.

Together with 149586883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149586883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74793440 + 74793441.

It is an arithmetic number, because the mean of its divisors is an integer number (74793441).

Almost surely, 2^149586881 is an apocalyptic number.

It is an amenable number.

149586881 is a deficient number, since it is larger than the sum of its proper divisors (1).

149586881 is an equidigital number, since it uses as much as digits as its factorization.

149586881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 50.

The square root of 149586881 is about 12230.5715729070. The cubic root of 149586881 is about 530.8410533826.

The spelling of 149586881 in words is "one hundred forty-nine million, five hundred eighty-six thousand, eight hundred eighty-one".