149354657 has 4 divisors (see below), whose sum is σ = 151803156. Its totient is φ = 146906160.

The previous prime is 149354651. The next prime is 149354671. The reversal of 149354657 is 756453941.

149354657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756453941 = 107 ⋅7069663.

It can be written as a sum of positive squares in 2 ways, for example, as 75411856 + 73942801 = 8684^2 + 8599^2 .

It is a cyclic number.

It is not a de Polignac number, because 149354657 - 2⁶ = 149354593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149354651) 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, 1224158 + ... + 1224279.

It is an arithmetic number, because the mean of its divisors is an integer number (37950789).

Almost surely, 2^149354657 is an apocalyptic number.

It is an amenable number.

149354657 is a deficient number, since it is larger than the sum of its proper divisors (2448499).

149354657 is an equidigital number, since it uses as much as digits as its factorization.

149354657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448498.

The product of its digits is 453600, while the sum is 44.

The square root of 149354657 is about 12221.0742981131. The cubic root of 149354657 is about 530.5662122586.

The spelling of 149354657 in words is "one hundred forty-nine million, three hundred fifty-four thousand, six hundred fifty-seven".