981813195 has 96 divisors (see below), whose sum is σ = 1917527040. Its totient is φ = 460615680.

The previous prime is 981813191. The next prime is 981813197. The reversal of 981813195 is 591318189.

It is not a de Polignac number, because 981813195 - 2² = 981813191 is a prime.

It is a super-2 number, since 2×981813195² = 1927914299752216050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 981813195.

It is not an unprimeable number, because it can be changed into a prime (981813191) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4107886 + ... + 4108124.

It is an arithmetic number, because the mean of its divisors is an integer number (19974240).

Almost surely, 2^981813195 is an apocalyptic number.

981813195 is a deficient number, since it is larger than the sum of its proper divisors (935713845).

981813195 is a wasteful number, since it uses less digits than its factorization.

981813195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 494 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 981813195 is about 31333.8984966761. The cubic root of 981813195 is about 993.9006046812.

The spelling of 981813195 in words is "nine hundred eighty-one million, eight hundred thirteen thousand, one hundred ninety-five".