7149244381 has 8 divisors (see below), whose sum is σ = 7202967800. Its totient is φ = 7095693312.

The previous prime is 7149244373. The next prime is 7149244411. The reversal of 7149244381 is 1834429417.

It can be written as a sum of positive squares in 4 ways, for example, as 631265625 + 6517978756 = 25125^2 + 80734^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7149244381 - 2³ = 7149244373 is a prime.

It is a super-2 number, since 2×7149244381² (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 (7149244301) 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, 40795 + ... + 126343.

It is an arithmetic number, because the mean of its divisors is an integer number (900370975).

Almost surely, 2^7149244381 is an apocalyptic number.

It is an amenable number.

7149244381 is a deficient number, since it is larger than the sum of its proper divisors (53723419).

7149244381 is a wasteful number, since it uses less digits than its factorization.

7149244381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86175.

The product of its digits is 193536, while the sum is 43.

The square root of 7149244381 is about 84553.2044395717. The cubic root of 7149244381 is about 1926.4306568099.

The spelling of 7149244381 in words is "seven billion, one hundred forty-nine million, two hundred forty-four thousand, three hundred eighty-one".