1923151 has 2 divisors, whose sum is σ = 1923152. Its totient is φ = 1923150.

The previous prime is 1923139. The next prime is 1923157. The reversal of 1923151 is 1513291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1923151 - 2¹¹ = 1921103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1923157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961575 + 961576.

It is an arithmetic number, because the mean of its divisors is an integer number (961576).

2^1923151 is an apocalyptic number.

1923151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923151 is an equidigital number, since it uses as much as digits as its factorization.

1923151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 22.

The square root of 1923151 is about 1386.7771991203. Note that the first 3 decimals coincide. The cubic root of 1923151 is about 124.3572553660.

The spelling of 1923151 in words is "one million, nine hundred twenty-three thousand, one hundred fifty-one".