1856457241 has 2 divisors, whose sum is σ = 1856457242. Its totient is φ = 1856457240.

The previous prime is 1856457223. The next prime is 1856457257. The reversal of 1856457241 is 1427546581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1639926016 + 216531225 = 40496^2 + 14715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1856457241 - 2¹¹ = 1856455193 is a prime.

It is a super-2 number, since 2×1856457241² = 6892866975322664162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1856457541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 928228620 + 928228621.

It is an arithmetic number, because the mean of its divisors is an integer number (928228621).

Almost surely, 2^1856457241 is an apocalyptic number.

It is an amenable number.

1856457241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1856457241 is an equidigital number, since it uses as much as digits as its factorization.

1856457241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 43.

The square root of 1856457241 is about 43086.6248504104. The cubic root of 1856457241 is about 1229.0276407537.

The spelling of 1856457241 in words is "one billion, eight hundred fifty-six million, four hundred fifty-seven thousand, two hundred forty-one".