149288238809 has 4 divisors (see below), whose sum is σ = 154103988480. Its totient is φ = 144472489140.

The previous prime is 149288238779. The next prime is 149288238857. The reversal of 149288238809 is 908832882941.

149288238809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908832882941 = 29 ⋅31339064929.

It is a cyclic number.

It is not a de Polignac number, because 149288238809 - 2¹² = 149288234713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149288238709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2407874789 + ... + 2407874850.

It is an arithmetic number, because the mean of its divisors is an integer number (38525997120).

Almost surely, 2^149288238809 is an apocalyptic number.

It is an amenable number.

149288238809 is a deficient number, since it is larger than the sum of its proper divisors (4815749671).

149288238809 is an equidigital number, since it uses as much as digits as its factorization.

149288238809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815749670.

The product of its (nonzero) digits is 15925248, while the sum is 62.

The spelling of 149288238809 in words is "one hundred forty-nine billion, two hundred eighty-eight million, two hundred thirty-eight thousand, eight hundred nine".