1745246857 has 2 divisors, whose sum is σ = 1745246858. Its totient is φ = 1745246856.

The previous prime is 1745246813. The next prime is 1745246861. The reversal of 1745246857 is 7586425471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1736888976 + 8357881 = 41676^2 + 2891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1745246857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1745246857.

It is not a weakly prime, because it can be changed into another prime (1745246807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872623428 + 872623429.

It is an arithmetic number, because the mean of its divisors is an integer number (872623429).

Almost surely, 2^1745246857 is an apocalyptic number.

It is an amenable number.

1745246857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745246857 is an equidigital number, since it uses as much as digits as its factorization.

1745246857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 49.

The square root of 1745246857 is about 41776.1517734700. The cubic root of 1745246857 is about 1203.9791189357.

The spelling of 1745246857 in words is "one billion, seven hundred forty-five million, two hundred forty-six thousand, eight hundred fifty-seven".