149453761 has 4 divisors (see below), whose sum is σ = 149533012. Its totient is φ = 149374512.

The previous prime is 149453743. The next prime is 149453789. The reversal of 149453761 is 167354941.

149453761 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: 167354941 = 13 ⋅12873457.

It can be written as a sum of positive squares in 2 ways, for example, as 102394161 + 47059600 = 10119^2 + 6860^2 .

It is a cyclic number.

It is not a de Polignac number, because 149453761 - 2⁵ = 149453729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149453741) 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, 36726 + ... + 40591.

It is an arithmetic number, because the mean of its divisors is an integer number (37383253).

Almost surely, 2^149453761 is an apocalyptic number.

It is an amenable number.

149453761 is a deficient number, since it is larger than the sum of its proper divisors (79251).

149453761 is an equidigital number, since it uses as much as digits as its factorization.

149453761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79250.

The product of its digits is 90720, while the sum is 40.

The square root of 149453761 is about 12225.1282610859. The cubic root of 149453761 is about 530.6835383806.

It can be divided in two parts, 1494 and 53761, that added together give a palindrome (55255).

The spelling of 149453761 in words is "one hundred forty-nine million, four hundred fifty-three thousand, seven hundred sixty-one".