1161729504 has 72 divisors (see below), whose sum is σ = 3557808072. Its totient is φ = 357454080.

The previous prime is 1161729487. The next prime is 1161729533. The reversal of 1161729504 is 4059271611.

1161729504 is a `hidden beast` number, since 11 + 617 + 29 + 5 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151402 + ... + 158889.

It is an arithmetic number, because the mean of its divisors is an integer number (49414001).

Almost surely, 2^1161729504 is an apocalyptic number.

It is an amenable number.

1161729504 is an abundant number, since it is smaller than the sum of its proper divisors (2396078568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161729504 is a wasteful number, since it uses less digits than its factorization.

1161729504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310320 (or 310309 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1161729504 is about 34084.1532680511. The cubic root of 1161729504 is about 1051.2395049199.

The spelling of 1161729504 in words is "one billion, one hundred sixty-one million, seven hundred twenty-nine thousand, five hundred four".