1372814257 has 2 divisors, whose sum is σ = 1372814258. Its totient is φ = 1372814256.

The previous prime is 1372814251. The next prime is 1372814297. The reversal of 1372814257 is 7524182731.

It is an a-pointer prime, because the next prime (1372814297) can be obtained adding 1372814257 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1279421361 + 93392896 = 35769^2 + 9664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372814257 - 2³ = 1372814249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372814251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686407128 + 686407129.

It is an arithmetic number, because the mean of its divisors is an integer number (686407129).

Almost surely, 2^1372814257 is an apocalyptic number.

It is an amenable number.

1372814257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372814257 is an equidigital number, since it uses as much as digits as its factorization.

1372814257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 1372814257 is about 37051.5081609373. The cubic root of 1372814257 is about 1111.4005147452.

Adding to 1372814257 its reverse (7524182731), we get a palindrome (8896996988).

The spelling of 1372814257 in words is "one billion, three hundred seventy-two million, eight hundred fourteen thousand, two hundred fifty-seven".