981368492 has 24 divisors (see below), whose sum is σ = 1874845056. Its totient is φ = 446732928.

The previous prime is 981368491. The next prime is 981368513. The reversal of 981368492 is 294863189.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 981368492.

It is not an unprimeable number, because it can be changed into a prime (981368491) 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, 125468 + ... + 133059.

It is an arithmetic number, because the mean of its divisors is an integer number (78118544).

Almost surely, 2^981368492 is an apocalyptic number.

It is an amenable number.

981368492 is a deficient number, since it is larger than the sum of its proper divisors (893476564).

981368492 is a wasteful number, since it uses less digits than its factorization.

981368492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258617 (or 258615 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 981368492 is about 31326.8014964822. The cubic root of 981368492 is about 993.7505227269.

The spelling of 981368492 in words is "nine hundred eighty-one million, three hundred sixty-eight thousand, four hundred ninety-two".