1057870739 has 2 divisors, whose sum is σ = 1057870740. Its totient is φ = 1057870738.

The previous prime is 1057870661. The next prime is 1057870741. The reversal of 1057870739 is 9370787501.

It is a strong prime.

It is an emirp because it is prime and its reverse (9370787501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057870739 is a prime.

It is a super-2 number, since 2×1057870739² = 2238181000864812242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1057870741, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1057870693 and 1057870702.

It is not a weakly prime, because it can be changed into another prime (1057870789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528935369 + 528935370.

It is an arithmetic number, because the mean of its divisors is an integer number (528935370).

Almost surely, 2^1057870739 is an apocalyptic number.

1057870739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057870739 is an equidigital number, since it uses as much as digits as its factorization.

1057870739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 47.

The square root of 1057870739 is about 32524.9248884605. The cubic root of 1057870739 is about 1018.9296535188.

The spelling of 1057870739 in words is "one billion, fifty-seven million, eight hundred seventy thousand, seven hundred thirty-nine".