1002119091 has 4 divisors (see below), whose sum is σ = 1336158792. Its totient is φ = 668079392.

The previous prime is 1002119057. The next prime is 1002119119. The reversal of 1002119091 is 1909112001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002119091 - 2⁷ = 1002118963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002119011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167019846 + ... + 167019851.

It is an arithmetic number, because the mean of its divisors is an integer number (334039698).

Almost surely, 2^1002119091 is an apocalyptic number.

1002119091 is a deficient number, since it is larger than the sum of its proper divisors (334039701).

1002119091 is an equidigital number, since it uses as much as digits as its factorization.

1002119091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334039700.

The product of its (nonzero) digits is 162, while the sum is 24.

The square root of 1002119091 is about 31656.2646406679. The cubic root of 1002119091 is about 1000.7058653036.

The spelling of 1002119091 in words is "one billion, two million, one hundred nineteen thousand, ninety-one".