981374193 has 6 divisors (see below), whose sum is σ = 1417540514. Its totient is φ = 654249456.

The previous prime is 981374183. The next prime is 981374213. The reversal of 981374193 is 391473189.

981374193 is a `hidden beast` number, since 98 + 1 + 374 + 193 = 666.

It can be written as a sum of positive squares in only one way, i.e., 954624609 + 26749584 = 30897^2 + 5172^2 .

It is not a de Polignac number, because 981374193 - 2¹² = 981370097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981374183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54520780 + ... + 54520797.

Almost surely, 2^981374193 is an apocalyptic number.

It is an amenable number.

981374193 is a deficient number, since it is larger than the sum of its proper divisors (436166321).

981374193 is a wasteful number, since it uses less digits than its factorization.

981374193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109041583 (or 109041580 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 981374193 is about 31326.8924887228. The cubic root of 981374193 is about 993.7524470333.

The spelling of 981374193 in words is "nine hundred eighty-one million, three hundred seventy-four thousand, one hundred ninety-three".