149215022909 has 4 divisors (see below), whose sum is σ = 153247861404. Its totient is φ = 145182184416.

The previous prime is 149215022903. The next prime is 149215022933. The reversal of 149215022909 is 909220512941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89970002500 + 59245020409 = 299950^2 + 243403^2 .

It is a cyclic number.

It is not a de Polignac number, because 149215022909 - 2¹⁶ = 149214957373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149215022909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149215022903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2016419192 + ... + 2016419265.

It is an arithmetic number, because the mean of its divisors is an integer number (38311965351).

Almost surely, 2^149215022909 is an apocalyptic number.

It is an amenable number.

149215022909 is a deficient number, since it is larger than the sum of its proper divisors (4032838495).

149215022909 is an equidigital number, since it uses as much as digits as its factorization.

149215022909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032838494.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 149215022909 in words is "one hundred forty-nine billion, two hundred fifteen million, twenty-two thousand, nine hundred nine".