2729691157 has 2 divisors, whose sum is σ = 2729691158. Its totient is φ = 2729691156.

The previous prime is 2729691119. The next prime is 2729691163. The reversal of 2729691157 is 7511969272.

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., 1585154596 + 1144536561 = 39814^2 + 33831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2729691157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2729691157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2729691457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364845578 + 1364845579.

It is an arithmetic number, because the mean of its divisors is an integer number (1364845579).

Almost surely, 2^2729691157 is an apocalyptic number.

It is an amenable number.

2729691157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2729691157 is an equidigital number, since it uses as much as digits as its factorization.

2729691157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 2729691157 is about 52246.4463576232. The cubic root of 2729691157 is about 1397.5622811392.

The spelling of 2729691157 in words is "two billion, seven hundred twenty-nine million, six hundred ninety-one thousand, one hundred fifty-seven".