1157769061 has 4 divisors (see below), whose sum is σ = 1162573324. Its totient is φ = 1152964800.

The previous prime is 1157769043. The next prime is 1157769073. The reversal of 1157769061 is 1609677511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1055860036 + 101909025 = 32494^2 + 10095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157769061 - 2¹³ = 1157760869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157768999 and 1157769017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157769091) 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, 2401770 + ... + 2402251.

It is an arithmetic number, because the mean of its divisors is an integer number (290643331).

Almost surely, 2^1157769061 is an apocalyptic number.

It is an amenable number.

1157769061 is a deficient number, since it is larger than the sum of its proper divisors (4804263).

1157769061 is an equidigital number, since it uses as much as digits as its factorization.

1157769061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4804262.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 1157769061 is about 34026.0056574380. The cubic root of 1157769061 is about 1050.0435540512.

The spelling of 1157769061 in words is "one billion, one hundred fifty-seven million, seven hundred sixty-nine thousand, sixty-one".