9445370381 has 4 divisors (see below), whose sum is σ = 9450778752. Its totient is φ = 9439962012.

The previous prime is 9445370321. The next prime is 9445370413. The reversal of 9445370381 is 1830735449.

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.

It is a cyclic number.

It is not a de Polignac number, because 9445370381 - 2³⁰ = 8371628557 is a prime.

It is a super-2 number, since 2×9445370381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9445370321) 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, 2701565 + ... + 2705058.

It is an arithmetic number, because the mean of its divisors is an integer number (2362694688).

Almost surely, 2^9445370381 is an apocalyptic number.

It is an amenable number.

9445370381 is a deficient number, since it is larger than the sum of its proper divisors (5408371).

9445370381 is a wasteful number, since it uses less digits than its factorization.

9445370381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408370.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 9445370381 is about 97187.2953682733. The cubic root of 9445370381 is about 2113.8443112860.

The spelling of 9445370381 in words is "nine billion, four hundred forty-five million, three hundred seventy thousand, three hundred eighty-one".