1141769521 has 8 divisors (see below), whose sum is σ = 1210144104. Its totient is φ = 1073529600.

The previous prime is 1141769483. The next prime is 1141769537. The reversal of 1141769521 is 1259671411.

It can be written as a sum of positive squares in 4 ways, for example, as 3381921 + 1138387600 = 1839^2 + 33740^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1141769521 - 2⁷ = 1141769393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141769581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15930 + ... + 50371.

It is an arithmetic number, because the mean of its divisors is an integer number (151268013).

Almost surely, 2^1141769521 is an apocalyptic number.

It is an amenable number.

1141769521 is a deficient number, since it is larger than the sum of its proper divisors (68374583).

1141769521 is a wasteful number, since it uses less digits than its factorization.

1141769521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67331.

The product of its digits is 15120, while the sum is 37.

The square root of 1141769521 is about 33790.0802159450. The cubic root of 1141769521 is about 1045.1841501437.

The spelling of 1141769521 in words is "one billion, one hundred forty-one million, seven hundred sixty-nine thousand, five hundred twenty-one".