149811151 has 4 divisors (see below), whose sum is σ = 171212752. Its totient is φ = 128409552.

The previous prime is 149811149. The next prime is 149811161. The reversal of 149811151 is 151118941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151118941 = 6829 ⋅22129.

It is a cyclic number.

It is not a de Polignac number, because 149811151 - 2¹ = 149811149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149811161) 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, 10700790 + ... + 10700803.

It is an arithmetic number, because the mean of its divisors is an integer number (42803188).

Almost surely, 2^149811151 is an apocalyptic number.

149811151 is a deficient number, since it is larger than the sum of its proper divisors (21401601).

149811151 is an equidigital number, since it uses as much as digits as its factorization.

149811151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21401600.

The product of its digits is 1440, while the sum is 31.

The square root of 149811151 is about 12239.7365576225. The cubic root of 149811151 is about 531.1062109400.

The spelling of 149811151 in words is "one hundred forty-nine million, eight hundred eleven thousand, one hundred fifty-one".