1957243 has 2 divisors, whose sum is σ = 1957244. Its totient is φ = 1957242.

The previous prime is 1957187. The next prime is 1957283. The reversal of 1957243 is 3427591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1957243 - 2¹⁷ = 1826171 is a prime.

It is a super-2 number, since 2×1957243² = 7661600322098, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 9 + 5⁹ + 7 + 2 + 4⁶ + 3 .

It is not a weakly prime, because it can be changed into another prime (1957283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978621 + 978622.

It is an arithmetic number, because the mean of its divisors is an integer number (978622).

2^1957243 is an apocalyptic number.

1957243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957243 is an equidigital number, since it uses as much as digits as its factorization.

1957243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 1957243 is about 1399.0150106414. The cubic root of 1957243 is about 125.0877889970.

The spelling of 1957243 in words is "one million, nine hundred fifty-seven thousand, two hundred forty-three".