1371443057 has 8 divisors (see below), whose sum is σ = 1515252096. Its totient is φ = 1234649152.

The previous prime is 1371443041. The next prime is 1371443063. The reversal of 1371443057 is 7503441731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1371443057 - 2⁴ = 1371443041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1371443077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753373 + ... + 1754154.

It is an arithmetic number, because the mean of its divisors is an integer number (189406512).

Almost surely, 2^1371443057 is an apocalyptic number.

1371443057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1371443057 is a deficient number, since it is larger than the sum of its proper divisors (143809039).

1371443057 is a wasteful number, since it uses less digits than its factorization.

1371443057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507567.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 1371443057 is about 37032.9995679529. Note that the first 3 decimals coincide. The cubic root of 1371443057 is about 1111.0303602623.

Adding to 1371443057 its reverse (7503441731), we get a palindrome (8874884788).

The spelling of 1371443057 in words is "one billion, three hundred seventy-one million, four hundred forty-three thousand, fifty-seven".