981370493397 has 24 divisors (see below), whose sum is σ = 1691250739200. Its totient is φ = 560783138328.

The previous prime is 981370493371. The next prime is 981370493407. The reversal of 981370493397 is 793394073189.

981370493397 is a `hidden beast` number, since 9 + 8 + 137 + 0 + 493 + 3 + 9 + 7 = 666.

It is not a de Polignac number, because 981370493397 - 2¹¹ = 981370491349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981370493317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 370886997 + ... + 370889642.

It is an arithmetic number, because the mean of its divisors is an integer number (70468780800).

Almost surely, 2^981370493397 is an apocalyptic number.

It is an amenable number.

981370493397 is a deficient number, since it is larger than the sum of its proper divisors (709880245803).

981370493397 is a wasteful number, since it uses less digits than its factorization.

981370493397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741776662 (or 741776649 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 981370493397 in words is "nine hundred eighty-one billion, three hundred seventy million, four hundred ninety-three thousand, three hundred ninety-seven".