1072861157 has 2 divisors, whose sum is σ = 1072861158. Its totient is φ = 1072861156.

The previous prime is 1072861123. The next prime is 1072861171. The reversal of 1072861157 is 7511682701.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926958916 + 145902241 = 30446^2 + 12079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072861157 - 2¹⁸ = 1072599013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1072861157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1072861117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536430578 + 536430579.

It is an arithmetic number, because the mean of its divisors is an integer number (536430579).

Almost surely, 2^1072861157 is an apocalyptic number.

It is an amenable number.

1072861157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072861157 is an equidigital number, since it uses as much as digits as its factorization.

1072861157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 1072861157 is about 32754.5593314885. The cubic root of 1072861157 is about 1023.7199669267.

The spelling of 1072861157 in words is "one billion, seventy-two million, eight hundred sixty-one thousand, one hundred fifty-seven".