1928501 has 2 divisors, whose sum is σ = 1928502. Its totient is φ = 1928500.

The previous prime is 1928489. The next prime is 1928513. The reversal of 1928501 is 1058291.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1928489) and next prime (1928513).

It can be written as a sum of positive squares in only one way, i.e., 1100401 + 828100 = 1049^2 + 910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1928501 is a prime.

It is a super-2 number, since 2×1928501² = 7438232214002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1928561) 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 as a sum of consecutive naturals, namely, 964250 + 964251.

It is an arithmetic number, because the mean of its divisors is an integer number (964251).

2^1928501 is an apocalyptic number.

It is an amenable number.

1928501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928501 is an equidigital number, since it uses as much as digits as its factorization.

1928501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1928501 is about 1388.7047922435. The cubic root of 1928501 is about 124.4724647847.

The spelling of 1928501 in words is "one million, nine hundred twenty-eight thousand, five hundred one".