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148445913 = 3711642623
BaseRepresentation
bin10001101100100…
…01101011011001
3101100022211111210
420312101223121
5301000232123
622421413333
73451524630
oct1066215331
9340284453
10148445913
1176880680
124186a249
13249a6725
1415a02517
15d073e93
hex8d91ad9

148445913 has 16 divisors (see below), whose sum is σ = 246767616. Its totient is φ = 77114640.

The previous prime is 148445911. The next prime is 148445923. The reversal of 148445913 is 319544841.

148445913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 148445913 - 21 = 148445911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148445911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321081 + ... + 321542.

It is an arithmetic number, because the mean of its divisors is an integer number (15422976).

Almost surely, 2148445913 is an apocalyptic number.

It is an amenable number.

148445913 is a deficient number, since it is larger than the sum of its proper divisors (98321703).

148445913 is a wasteful number, since it uses less digits than its factorization.

148445913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642644.

The product of its digits is 69120, while the sum is 39.

The square root of 148445913 is about 12183.8381883543. The cubic root of 148445913 is about 529.4879509261.

The spelling of 148445913 in words is "one hundred forty-eight million, four hundred forty-five thousand, nine hundred thirteen".

Divisors: 1 3 7 11 21 33 77 231 642623 1927869 4498361 7068853 13495083 21206559 49481971 148445913