1134720643 has 16 divisors (see below), whose sum is σ = 1317959680. Its totient is φ = 956805696.

The previous prime is 1134720637. The next prime is 1134720649. The reversal of 1134720643 is 3460274311.

It is an interprime number because it is at equal distance from previous prime (1134720637) and next prime (1134720649).

It is not a de Polignac number, because 1134720643 - 2¹³ = 1134712451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1134720649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528430 + ... + 530572.

It is an arithmetic number, because the mean of its divisors is an integer number (82372480).

Almost surely, 2^1134720643 is an apocalyptic number.

1134720643 is a deficient number, since it is larger than the sum of its proper divisors (183239037).

1134720643 is a wasteful number, since it uses less digits than its factorization.

1134720643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1134720643 is about 33685.6147784184. The cubic root of 1134720643 is about 1043.0288438919.

Adding to 1134720643 its reverse (3460274311), we get a palindrome (4594994954).

The spelling of 1134720643 in words is "one billion, one hundred thirty-four million, seven hundred twenty thousand, six hundred forty-three".