1957043971 has 2 divisors, whose sum is σ = 1957043972. Its totient is φ = 1957043970.

The previous prime is 1957043911. The next prime is 1957044013. The reversal of 1957043971 is 1793407591.

It is a strong prime.

It is an emirp because it is prime and its reverse (1793407591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1957043971 - 2¹⁷ = 1956912899 is a prime.

It is a super-2 number, since 2×1957043971² = 7660042208854897682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1957043911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978521985 + 978521986.

It is an arithmetic number, because the mean of its divisors is an integer number (978521986).

Almost surely, 2^1957043971 is an apocalyptic number.

1957043971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957043971 is an equidigital number, since it uses as much as digits as its factorization.

1957043971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 1957043971 is about 44238.4897007120. The cubic root of 1957043971 is about 1250.8354885893.

The spelling of 1957043971 in words is "one billion, nine hundred fifty-seven million, forty-three thousand, nine hundred seventy-one".