1057243766 has 4 divisors (see below), whose sum is σ = 1585865652. Its totient is φ = 528621882.

The previous prime is 1057243763. The next prime is 1057243769. The reversal of 1057243766 is 6673427501.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1057243763) and next prime (1057243769).

It is a super-2 number, since 2×1057243766² = 2235528761491725512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057243763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264310940 + ... + 264310943.

It is an arithmetic number, because the mean of its divisors is an integer number (396466413).

Almost surely, 2^1057243766 is an apocalyptic number.

1057243766 is a deficient number, since it is larger than the sum of its proper divisors (528621886).

1057243766 is an equidigital number, since it uses as much as digits as its factorization.

1057243766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528621885.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 1057243766 is about 32515.2851133125. The cubic root of 1057243766 is about 1018.7283158670.

The spelling of 1057243766 in words is "one billion, fifty-seven million, two hundred forty-three thousand, seven hundred sixty-six".