7489474381 has 8 divisors (see below), whose sum is σ = 7542828000. Its totient is φ = 7436249040.

The previous prime is 7489474379. The next prime is 7489474403. The reversal of 7489474381 is 1834749847.

It is a happy number.

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 7489474381 - 2¹ = 7489474379 is a prime.

It is a super-2 number, since 2×7489474381² (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 (7489474331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86670 + ... + 149968.

It is an arithmetic number, because the mean of its divisors is an integer number (942853500).

Almost surely, 2^7489474381 is an apocalyptic number.

It is an amenable number.

7489474381 is a deficient number, since it is larger than the sum of its proper divisors (53353619).

7489474381 is a wasteful number, since it uses less digits than its factorization.

7489474381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64139.

The product of its digits is 5419008, while the sum is 55.

The square root of 7489474381 is about 86541.7493525524. The cubic root of 7489474381 is about 1956.5176939879.

The spelling of 7489474381 in words is "seven billion, four hundred eighty-nine million, four hundred seventy-four thousand, three hundred eighty-one".