145973907 has 20 divisors (see below), whose sum is σ = 225582720. Its totient is φ = 93958704.

The previous prime is 145973881. The next prime is 145973921. The reversal of 145973907 is 709379541.

It is not a de Polignac number, because 145973907 - 2¹⁸ = 145711763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145973957) 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 19 ways as a sum of consecutive naturals, for example, 28723 + ... + 33420.

It is an arithmetic number, because the mean of its divisors is an integer number (11279136).

Almost surely, 2^145973907 is an apocalyptic number.

145973907 is a deficient number, since it is larger than the sum of its proper divisors (79608813).

145973907 is an equidigital number, since it uses as much as digits as its factorization.

145973907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62184 (or 62175 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 145973907 is about 12081.9661893253. The cubic root of 145973907 is about 526.5323719351.

The spelling of 145973907 in words is "one hundred forty-five million, nine hundred seventy-three thousand, nine hundred seven".