149826900161 has 4 divisors (see below), whose sum is σ = 150090216900. Its totient is φ = 149563583424.

The previous prime is 149826900143. The next prime is 149826900163. The reversal of 149826900161 is 161009628941.

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 92744611600 + 57082288561 = 304540^2 + 238919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149826900161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149826900163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131657516 + ... + 131658653.

It is an arithmetic number, because the mean of its divisors is an integer number (37522554225).

Almost surely, 2^149826900161 is an apocalyptic number.

It is an amenable number.

149826900161 is a deficient number, since it is larger than the sum of its proper divisors (263316739).

149826900161 is an equidigital number, since it uses as much as digits as its factorization.

149826900161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263316738.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 149826900161 in words is "one hundred forty-nine billion, eight hundred twenty-six million, nine hundred thousand, one hundred sixty-one".