18757953 has 16 divisors (see below), whose sum is σ = 29424960. Its totient is φ = 11769408.

The previous prime is 18757931. The next prime is 18757961. The reversal of 18757953 is 35975781.

It is not a de Polignac number, because 18757953 - 2⁹ = 18757441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18757899 and 18757908.

It is not an unprimeable number, because it can be changed into a prime (18757913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19975 + ... + 20892.

It is an arithmetic number, because the mean of its divisors is an integer number (1839060).

Almost surely, 2^18757953 is an apocalyptic number.

It is an amenable number.

18757953 is a deficient number, since it is larger than the sum of its proper divisors (10667007).

18757953 is a wasteful number, since it uses less digits than its factorization.

18757953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40893 (or 40887 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 18757953 is about 4331.0452549009. The cubic root of 18757953 is about 265.7021984244.

The spelling of 18757953 in words is "eighteen million, seven hundred fifty-seven thousand, nine hundred fifty-three".