1902230322091 has 4 divisors (see below), whose sum is σ = 2075160351384. Its totient is φ = 1729300292800.

The previous prime is 1902230322059. The next prime is 1902230322103.

1902230322091 is nontrivially palindromic in base 10.

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 1902230322091 - 2⁵ = 1902230322059 is a prime.

It is a super-2 number, since 2×1902230322091² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1902230332091) 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, 86465014630 + ... + 86465014651.

It is an arithmetic number, because the mean of its divisors is an integer number (518790087846).

Almost surely, 2^{1902230322091} is an apocalyptic number.

1902230322091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1902230322091 is a deficient number, since it is larger than the sum of its proper divisors (172930029293).

1902230322091 is a wasteful number, since it uses less digits than its factorization.

1902230322091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172930029292.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 1902230322091 in words is "one trillion, nine hundred two billion, two hundred thirty million, three hundred twenty-two thousand, ninety-one".