1164441702649 has 3 divisors (see below), whose sum is σ = 1164442781743. Its totient is φ = 1164440623556.

The previous prime is 1164441702643. The next prime is 1164441702659. The reversal of 1164441702649 is 9462071444611.

The square root of 1164441702649 is 1079093.

It is a perfect power (a square), and thus also a powerful number.

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 only one way, i.e., 485541225 + 1163956161424 = 22035^2 + 1078868^2 .

It is not a de Polignac number, because 1164441702649 - 2¹⁹ = 1164441178361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1164441702643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 539547 + ... + 1618639.

Almost surely, 2^{1164441702649} is an apocalyptic number.

1164441702649 is the 1079093-rd square number.

1164441702649 is the 539547-th centered octagonal number.

It is an amenable number.

1164441702649 is a deficient number, since it is larger than the sum of its proper divisors (1079094).

1164441702649 is an frugal number, since it uses more digits than its factorization.

1164441702649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158186 (or 1079093 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

Multiplying 1164441702649 by its sum of digits (49), we get a square (57057643429801 = 7553651²).

The spelling of 1164441702649 in words is "one trillion, one hundred sixty-four billion, four hundred forty-one million, seven hundred two thousand, six hundred forty-nine".