1057430378 has 4 divisors (see below), whose sum is σ = 1586145570. Its totient is φ = 528715188.

The previous prime is 1057430369. The next prime is 1057430411. The reversal of 1057430378 is 8730347501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8730347501 = 17 ⋅513549853.

It can be written as a sum of positive squares in only one way, i.e., 579701929 + 477728449 = 24077^2 + 21857^2 .

It is a super-2 number, since 2×1057430378² = 2236318008634445768, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 264357593 + ... + 264357596.

Almost surely, 2^1057430378 is an apocalyptic number.

1057430378 is a deficient number, since it is larger than the sum of its proper divisors (528715192).

1057430378 is an equidigital number, since it uses as much as digits as its factorization.

1057430378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528715191.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 1057430378 is about 32518.1545909358. The cubic root of 1057430378 is about 1018.7882502456.

Adding to 1057430378 its reverse (8730347501), we get a palindrome (9787777879).

The spelling of 1057430378 in words is "one billion, fifty-seven million, four hundred thirty thousand, three hundred seventy-eight".