148693261 has 4 divisors (see below), whose sum is σ = 149272092. Its totient is φ = 148114432.

The previous prime is 148693231. The next prime is 148693273. The reversal of 148693261 is 162396841.

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 70459236 + 78234025 = 8394^2 + 8845^2 .

It is a cyclic number.

It is not a de Polignac number, because 148693261 - 2⁹ = 148692749 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 (148693201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289030 + ... + 289543.

It is an arithmetic number, because the mean of its divisors is an integer number (37318023).

Almost surely, 2^148693261 is an apocalyptic number.

It is an amenable number.

148693261 is a deficient number, since it is larger than the sum of its proper divisors (578831).

148693261 is an equidigital number, since it uses as much as digits as its factorization.

148693261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578830.

The product of its digits is 62208, while the sum is 40.

The square root of 148693261 is about 12193.9846235757. The cubic root of 148693261 is about 529.7818741663.

The spelling of 148693261 in words is "one hundred forty-eight million, six hundred ninety-three thousand, two hundred sixty-one".