1865827541 has 2 divisors, whose sum is σ = 1865827542. Its totient is φ = 1865827540.

The previous prime is 1865827511. The next prime is 1865827547. The reversal of 1865827541 is 1457285681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1742728516 + 123099025 = 41746^2 + 11095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1865827541 - 2⁶ = 1865827477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1865827547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932913770 + 932913771.

It is an arithmetic number, because the mean of its divisors is an integer number (932913771).

Almost surely, 2^1865827541 is an apocalyptic number.

It is an amenable number.

1865827541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1865827541 is an equidigital number, since it uses as much as digits as its factorization.

1865827541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 47.

The square root of 1865827541 is about 43195.2259051854. The cubic root of 1865827541 is about 1231.0919734109.

The spelling of 1865827541 in words is "one billion, eight hundred sixty-five million, eight hundred twenty-seven thousand, five hundred forty-one".