981370193 has 4 divisors (see below), whose sum is σ = 1013027328. Its totient is φ = 949713060.

The previous prime is 981370189. The next prime is 981370217. The reversal of 981370193 is 391073189.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 391073189 = 13 ⋅30082553.

It is a cyclic number.

It is not a de Polignac number, because 981370193 - 2² = 981370189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981370193.

It is not an unprimeable number, because it can be changed into a prime (981370183) 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, 15828521 + ... + 15828582.

It is an arithmetic number, because the mean of its divisors is an integer number (253256832).

Almost surely, 2^981370193 is an apocalyptic number.

It is an amenable number.

981370193 is a deficient number, since it is larger than the sum of its proper divisors (31657135).

981370193 is a wasteful number, since it uses less digits than its factorization.

981370193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31657134.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 981370193 is about 31326.8286457471. The cubic root of 981370193 is about 993.7510968805.

The spelling of 981370193 in words is "nine hundred eighty-one million, three hundred seventy thousand, one hundred ninety-three".