1057968739 has 4 divisors (see below), whose sum is σ = 1058126080. Its totient is φ = 1057811400.

The previous prime is 1057968733. The next prime is 1057968761. The reversal of 1057968739 is 9378697501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9378697501 = 71 ⋅132094331.

It is a cyclic number.

It is not a de Polignac number, because 1057968739 - 2¹⁵ = 1057935971 is a prime.

It is a super-2 number, since 2×1057968739² = 2238595705402500242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1057968739.

It is not an unprimeable number, because it can be changed into a prime (1057968733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68112 + ... + 82189.

It is an arithmetic number, because the mean of its divisors is an integer number (264531520).

Almost surely, 2^1057968739 is an apocalyptic number.

1057968739 is a deficient number, since it is larger than the sum of its proper divisors (157341).

1057968739 is an equidigital number, since it uses as much as digits as its factorization.

1057968739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157340.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 1057968739 is about 32526.4313904861. The cubic root of 1057968739 is about 1018.9611167273.

The spelling of 1057968739 in words is "one billion, fifty-seven million, nine hundred sixty-eight thousand, seven hundred thirty-nine".