1882971157 has 2 divisors, whose sum is σ = 1882971158. Its totient is φ = 1882971156.

The previous prime is 1882971133. The next prime is 1882971197. The reversal of 1882971157 is 7511792881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1039998001 + 842973156 = 32249^2 + 29034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1882971157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1882971157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1882971197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 941485578 + 941485579.

It is an arithmetic number, because the mean of its divisors is an integer number (941485579).

Almost surely, 2^1882971157 is an apocalyptic number.

It is an amenable number.

1882971157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1882971157 is an equidigital number, since it uses as much as digits as its factorization.

1882971157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 49.

The square root of 1882971157 is about 43393.2155641870. The cubic root of 1882971157 is about 1234.8509946057.

The spelling of 1882971157 in words is "one billion, eight hundred eighty-two million, nine hundred seventy-one thousand, one hundred fifty-seven".