849970818890 has 16 divisors (see below), whose sum is σ = 1565527648608. Its totient is φ = 332081622096.

The previous prime is 849970818881. The next prime is 849970818899. The reversal of 849970818890 is 98818079948.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (849970818881) and next prime (849970818899).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (849970818899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988337732 + ... + 988338591.

It is an arithmetic number, because the mean of its divisors is an integer number (97845478038).

Almost surely, 2^849970818890 is an apocalyptic number.

849970818890 is a deficient number, since it is larger than the sum of its proper divisors (715556829718).

849970818890 is a wasteful number, since it uses less digits than its factorization.

849970818890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976676373.

The product of its (nonzero) digits is 83607552, while the sum is 71.

The spelling of 849970818890 in words is "eight hundred forty-nine billion, nine hundred seventy million, eight hundred eighteen thousand, eight hundred ninety".