149814669481 has 27 divisors (see below), whose sum is σ = 156442871781. Its totient is φ = 143465740704.

The previous prime is 149814669439. The next prime is 149814669491. The reversal of 149814669481 is 184966418941.

The square root of 149814669481 is 387059.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 26180858025 + 123633811456 = 161805^2 + 351616^2 .

It is a de Polignac number, because none of the positive numbers 2^k-149814669481 is a prime.

It is a super-2 number, since 2×149814669481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149814669491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1374446455 + ... + 1374446563.

Almost surely, 2^149814669481 is an apocalyptic number.

149814669481 is the 387059-th square number.

149814669481 is the 193530-th centered octagonal number.

It is an amenable number.

149814669481 is a deficient number, since it is larger than the sum of its proper divisors (6628202300).

149814669481 is an frugal number, since it uses more digits than its factorization.

149814669481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 229 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 61.

The spelling of 149814669481 in words is "one hundred forty-nine billion, eight hundred fourteen million, six hundred sixty-nine thousand, four hundred eighty-one".