20037923 has 2 divisors, whose sum is σ = 20037924. Its totient is φ = 20037922.

The previous prime is 20037911. The next prime is 20037931. The reversal of 20037923 is 32973002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20037923 - 2⁶ = 20037859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20037892 and 20037901.

It is not a weakly prime, because it can be changed into another prime (20037973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10018961 + 10018962.

It is an arithmetic number, because the mean of its divisors is an integer number (10018962).

Almost surely, 2^20037923 is an apocalyptic number.

20037923 is a deficient number, since it is larger than the sum of its proper divisors (1).

20037923 is an equidigital number, since it uses as much as digits as its factorization.

20037923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 20037923 is about 4476.3738673172. The cubic root of 20037923 is about 271.6132181015.

The spelling of 20037923 in words is "twenty million, thirty-seven thousand, nine hundred twenty-three".