1374667857 has 6 divisors (see below), whose sum is σ = 1985631362. Its totient is φ = 916445232.

The previous prime is 1374667843. The next prime is 1374667859. The reversal of 1374667857 is 7587664731.

It can be written as a sum of positive squares in only one way, i.e., 1324668816 + 49999041 = 36396^2 + 7071^2 .

It is not a de Polignac number, because 1374667857 - 2⁶ = 1374667793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1374667859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76370428 + ... + 76370445.

Almost surely, 2^1374667857 is an apocalyptic number.

It is an amenable number.

1374667857 is a deficient number, since it is larger than the sum of its proper divisors (610963505).

1374667857 is a wasteful number, since it uses less digits than its factorization.

1374667857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152740879 (or 152740876 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The square root of 1374667857 is about 37076.5135496853. The cubic root of 1374667857 is about 1111.9005011749.

The spelling of 1374667857 in words is "one billion, three hundred seventy-four million, six hundred sixty-seven thousand, eight hundred fifty-seven".