1161651005 has 8 divisors (see below), whose sum is σ = 1400589024. Its totient is φ = 924915600.

The previous prime is 1161650993. The next prime is 1161651031. The reversal of 1161651005 is 5001561611.

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

It is not a de Polignac number, because 1161651005 - 2⁴ = 1161650989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549491 + ... + 551600.

It is an arithmetic number, because the mean of its divisors is an integer number (175073628).

Almost surely, 2^1161651005 is an apocalyptic number.

It is an amenable number.

1161651005 is a deficient number, since it is larger than the sum of its proper divisors (238938019).

1161651005 is a wasteful number, since it uses less digits than its factorization.

1161651005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101307.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1161651005 is about 34083.0017017281. The cubic root of 1161651005 is about 1051.2158266860.

The spelling of 1161651005 in words is "one billion, one hundred sixty-one million, six hundred fifty-one thousand, five".