1957043707 has 2 divisors, whose sum is σ = 1957043708. Its totient is φ = 1957043706.

The previous prime is 1957043677. The next prime is 1957043713. The reversal of 1957043707 is 7073407591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1957043707 is a prime.

It is a super-2 number, since 2×1957043707² = 7660040142216603698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1957047707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978521853 + 978521854.

It is an arithmetic number, because the mean of its divisors is an integer number (978521854).

Almost surely, 2^1957043707 is an apocalyptic number.

1957043707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957043707 is an equidigital number, since it uses as much as digits as its factorization.

1957043707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 1957043707 is about 44238.4867168849. The cubic root of 1957043707 is about 1250.8354323445.

The spelling of 1957043707 in words is "one billion, nine hundred fifty-seven million, forty-three thousand, seven hundred seven".