1000155011 has 8 divisors (see below), whose sum is σ = 1006647360. Its totient is φ = 993682368.

The previous prime is 1000154989. The next prime is 1000155019. The reversal of 1000155011 is 1105510001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000155011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000155019) by changing a digit.

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, 104645 + ... + 113801.

It is an arithmetic number, because the mean of its divisors is an integer number (125830920).

Almost surely, 2^1000155011 is an apocalyptic number.

1000155011 is a deficient number, since it is larger than the sum of its proper divisors (6492349).

1000155011 is an equidigital number, since it uses as much as digits as its factorization.

1000155011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9853.

The product of its (nonzero) digits is 25, while the sum is 14.

The square root of 1000155011 is about 31625.2274458224. The cubic root of 1000155011 is about 1000.0516676637.

Adding to 1000155011 its reverse (1105510001), we get a palindrome (2105665012).

The spelling of 1000155011 in words is "one billion, one hundred fifty-five thousand, eleven".