1161505002 has 32 divisors (see below), whose sum is σ = 2684707200. Its totient is φ = 328128768.

The previous prime is 1161505001. The next prime is 1161505027. The reversal of 1161505002 is 2005051611.

It is a super-3 number, since 3×1161505002³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1161505002.

It is not an unprimeable number, because it can be changed into a prime (1161505001) 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, 151627 + ... + 159102.

It is an arithmetic number, because the mean of its divisors is an integer number (83897100).

Almost surely, 2^1161505002 is an apocalyptic number.

1161505002 is an abundant number, since it is smaller than the sum of its proper divisors (1523202198).

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

1161505002 is a wasteful number, since it uses less digits than its factorization.

1161505002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310830.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1161505002 is about 34080.8597602819. The cubic root of 1161505002 is about 1051.1717838842.

Adding to 1161505002 its reverse (2005051611), we get a palindrome (3166556613).

The spelling of 1161505002 in words is "one billion, one hundred sixty-one million, five hundred five thousand, two".