148764181 has 4 divisors (see below), whose sum is σ = 150129100. Its totient is φ = 147399264.

The previous prime is 148764173. The next prime is 148764191. The reversal of 148764181 is 181467841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74218225 + 74545956 = 8615^2 + 8634^2 .

It is a cyclic number.

It is not a de Polignac number, because 148764181 - 2³ = 148764173 is a prime.

It is a super-2 number, since 2×148764181² = 44261563097201522, which 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 (148764151) 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, 682296 + ... + 682513.

It is an arithmetic number, because the mean of its divisors is an integer number (37532275).

Almost surely, 2^148764181 is an apocalyptic number.

It is an amenable number.

148764181 is a deficient number, since it is larger than the sum of its proper divisors (1364919).

148764181 is a wasteful number, since it uses less digits than its factorization.

148764181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364918.

The product of its digits is 43008, while the sum is 40.

The square root of 148764181 is about 12196.8922681149. The cubic root of 148764181 is about 529.8660881570.

The spelling of 148764181 in words is "one hundred forty-eight million, seven hundred sixty-four thousand, one hundred eighty-one".