1379155157 has 2 divisors, whose sum is σ = 1379155158. Its totient is φ = 1379155156.

The previous prime is 1379155133. The next prime is 1379155189. The reversal of 1379155157 is 7515519731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824034436 + 555120721 = 28706^2 + 23561^2 .

It is an emirp because it is prime and its reverse (7515519731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1379155157 - 2⁸ = 1379154901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1379155457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689577578 + 689577579.

It is an arithmetic number, because the mean of its divisors is an integer number (689577579).

Almost surely, 2^1379155157 is an apocalyptic number.

It is an amenable number.

1379155157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379155157 is an equidigital number, since it uses as much as digits as its factorization.

1379155157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165375, while the sum is 44.

The square root of 1379155157 is about 37136.9782965712. The cubic root of 1379155157 is about 1113.1090384352.

The spelling of 1379155157 in words is "one billion, three hundred seventy-nine million, one hundred fifty-five thousand, one hundred fifty-seven".