1002155011 has 32 divisors (see below), whose sum is σ = 1268305920. Its totient is φ = 778377600.

The previous prime is 1002154969. The next prime is 1002155017. The reversal of 1002155011 is 1105512001.

It is not a de Polignac number, because 1002155011 - 2⁹ = 1002154499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002155017) 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 31 ways as a sum of consecutive naturals, for example, 97045 + ... + 106873.

It is an arithmetic number, because the mean of its divisors is an integer number (39634560).

Almost surely, 2^1002155011 is an apocalyptic number.

1002155011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002155011 is a deficient number, since it is larger than the sum of its proper divisors (266150909).

1002155011 is a wasteful number, since it uses less digits than its factorization.

1002155011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 1002155011 is about 31656.8319798428. The cubic root of 1002155011 is about 1000.7178216088.

Adding to 1002155011 its reverse (1105512001), we get a palindrome (2107667012).

The spelling of 1002155011 in words is "one billion, two million, one hundred fifty-five thousand, eleven".