1071657157 has 2 divisors, whose sum is σ = 1071657158. Its totient is φ = 1071657156.

The previous prime is 1071657131. The next prime is 1071657187. The reversal of 1071657157 is 7517561701.

It is a happy number.

1071657157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 873438916 + 198218241 = 29554^2 + 14079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1071657157 is a prime.

It is a super-2 number, since 2×1071657157² = 2296898124298645298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071657127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535828578 + 535828579.

It is an arithmetic number, because the mean of its divisors is an integer number (535828579).

Almost surely, 2^1071657157 is an apocalyptic number.

It is an amenable number.

1071657157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071657157 is an equidigital number, since it uses as much as digits as its factorization.

1071657157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51450, while the sum is 40.

The square root of 1071657157 is about 32736.1750514626. The cubic root of 1071657157 is about 1023.3368728694.

The spelling of 1071657157 in words is "one billion, seventy-one million, six hundred fifty-seven thousand, one hundred fifty-seven".