148917973 has 4 divisors (see below), whose sum is σ = 149007628. Its totient is φ = 148828320.

The previous prime is 148917959. The next prime is 148917983. The reversal of 148917973 is 379719841.

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 20277009 + 128640964 = 4503^2 + 11342^2 .

It is a cyclic number.

It is not a de Polignac number, because 148917973 - 2¹³ = 148909781 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 (148917983) 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, 42288 + ... + 45673.

It is an arithmetic number, because the mean of its divisors is an integer number (37251907).

Almost surely, 2^148917973 is an apocalyptic number.

It is an amenable number.

148917973 is a deficient number, since it is larger than the sum of its proper divisors (89655).

148917973 is an equidigital number, since it uses as much as digits as its factorization.

148917973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89654.

The product of its digits is 381024, while the sum is 49.

The square root of 148917973 is about 12203.1951963410. The cubic root of 148917973 is about 530.0486166391.

The spelling of 148917973 in words is "one hundred forty-eight million, nine hundred seventeen thousand, nine hundred seventy-three".