149921926869 has 24 divisors (see below), whose sum is σ = 236621857696. Its totient is φ = 83872404000.

The previous prime is 149921926867. The next prime is 149921926873. The reversal of 149921926869 is 968629129941.

It is not a de Polignac number, because 149921926869 - 2¹ = 149921926867 is a prime.

It is a super-2 number, since 2×149921926869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149921926867) 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 23 ways as a sum of consecutive naturals, for example, 15880207 + ... + 15889644.

Almost surely, 2^149921926869 is an apocalyptic number.

It is an amenable number.

149921926869 is a deficient number, since it is larger than the sum of its proper divisors (86699930827).

149921926869 is a wasteful number, since it uses less digits than its factorization.

149921926869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31769889 (or 31769878 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 66.

The spelling of 149921926869 in words is "one hundred forty-nine billion, nine hundred twenty-one million, nine hundred twenty-six thousand, eight hundred sixty-nine".