1011715157 has 4 divisors (see below), whose sum is σ = 1011793356. Its totient is φ = 1011636960.

The previous prime is 1011715121. The next prime is 1011715171. The reversal of 1011715157 is 7515171101.

1011715157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 362178961 + 649536196 = 19031^2 + 25486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011715157 - 2²⁸ = 743279701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011714157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14558 + ... + 47279.

It is an arithmetic number, because the mean of its divisors is an integer number (252948339).

Almost surely, 2^1011715157 is an apocalyptic number.

It is an amenable number.

1011715157 is a deficient number, since it is larger than the sum of its proper divisors (78199).

1011715157 is an equidigital number, since it uses as much as digits as its factorization.

1011715157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78198.

The product of its (nonzero) digits is 1225, while the sum is 29.

The square root of 1011715157 is about 31807.4701446060. The cubic root of 1011715157 is about 1003.8899013808.

Adding to 1011715157 its reverse (7515171101), we get a palindrome (8526886258).

The spelling of 1011715157 in words is "one billion, eleven million, seven hundred fifteen thousand, one hundred fifty-seven".