2103678457 has 2 divisors, whose sum is σ = 2103678458. Its totient is φ = 2103678456.

The previous prime is 2103678433. The next prime is 2103678469. The reversal of 2103678457 is 7548763012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1557801961 + 545876496 = 39469^2 + 23364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103678457 - 2²⁷ = 1969460729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2103678407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051839228 + 1051839229.

It is an arithmetic number, because the mean of its divisors is an integer number (1051839229).

Almost surely, 2^2103678457 is an apocalyptic number.

It is an amenable number.

2103678457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103678457 is an equidigital number, since it uses as much as digits as its factorization.

2103678457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 2103678457 is about 45865.8746455358. The cubic root of 2103678457 is about 1281.3264360443.

The spelling of 2103678457 in words is "two billion, one hundred three million, six hundred seventy-eight thousand, four hundred fifty-seven".