1129537731 has 32 divisors (see below), whose sum is σ = 1785856000. Its totient is φ = 621419040.

The previous prime is 1129537729. The next prime is 1129537753. The reversal of 1129537731 is 1377359211.

It is not a de Polignac number, because 1129537731 - 2¹ = 1129537729 is a prime.

It is a super-2 number, since 2×1129537731² = 2551710971505256722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129537731.

It is not an unprimeable number, because it can be changed into a prime (1129537231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125190 + ... + 133908.

It is an arithmetic number, because the mean of its divisors is an integer number (55808000).

Almost surely, 2^1129537731 is an apocalyptic number.

1129537731 is a deficient number, since it is larger than the sum of its proper divisors (656318269).

1129537731 is a wasteful number, since it uses less digits than its factorization.

1129537731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8959.

The product of its digits is 39690, while the sum is 39.

The square root of 1129537731 is about 33608.5960879058. The cubic root of 1129537731 is about 1041.4383853834.

The spelling of 1129537731 in words is "one billion, one hundred twenty-nine million, five hundred thirty-seven thousand, seven hundred thirty-one".