1049731157 has 2 divisors, whose sum is σ = 1049731158. Its totient is φ = 1049731156.

The previous prime is 1049731141. The next prime is 1049731211. The reversal of 1049731157 is 7511379401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711502276 + 338228881 = 26674^2 + 18391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049731157 - 2⁴ = 1049731141 is a prime.

It is a super-2 number, since 2×1049731157² = 2203871003953117298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1049731157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1049731117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524865578 + 524865579.

It is an arithmetic number, because the mean of its divisors is an integer number (524865579).

Almost surely, 2^1049731157 is an apocalyptic number.

It is an amenable number.

1049731157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049731157 is an equidigital number, since it uses as much as digits as its factorization.

1049731157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 1049731157 is about 32399.5548889178. The cubic root of 1049731157 is about 1016.3096030465.

The spelling of 1049731157 in words is "one billion, forty-nine million, seven hundred thirty-one thousand, one hundred fifty-seven".