1494254857 has 2 divisors, whose sum is σ = 1494254858. Its totient is φ = 1494254856.

The previous prime is 1494254849. The next prime is 1494254891. The reversal of 1494254857 is 7584524941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874444041 + 619810816 = 29571^2 + 24896^2 .

It is a cyclic number.

It is not a de Polignac number, because 1494254857 - 2³ = 1494254849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1494254857.

It is not a weakly prime, because it can be changed into another prime (1494254807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747127428 + 747127429.

It is an arithmetic number, because the mean of its divisors is an integer number (747127429).

Almost surely, 2^1494254857 is an apocalyptic number.

It is an amenable number.

1494254857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1494254857 is an equidigital number, since it uses as much as digits as its factorization.

1494254857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 49.

The square root of 1494254857 is about 38655.5928294988. The cubic root of 1494254857 is about 1143.2509178430.

The spelling of 1494254857 in words is "one billion, four hundred ninety-four million, two hundred fifty-four thousand, eight hundred fifty-seven".