7427346381 has 32 divisors (see below), whose sum is σ = 13542744320. Its totient is φ = 3917719872.

The previous prime is 7427346379. The next prime is 7427346391. The reversal of 7427346381 is 1836437247.

7427346381 is a `hidden beast` number, since 7 + 4 + 2 + 7 + 3 + 4 + 638 + 1 = 666.

It is not a de Polignac number, because 7427346381 - 2¹ = 7427346379 is a prime.

It is a super-2 number, since 2×7427346381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7427346301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1509010 + ... + 1513923.

It is an arithmetic number, because the mean of its divisors is an integer number (423210760).

Almost surely, 2^7427346381 is an apocalyptic number.

It is an amenable number.

7427346381 is a deficient number, since it is larger than the sum of its proper divisors (6115397939).

7427346381 is a wasteful number, since it uses less digits than its factorization.

7427346381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022962 (or 3022956 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 7427346381 is about 86182.0537060936. The cubic root of 7427346381 is about 1951.0926491768.

The spelling of 7427346381 in words is "seven billion, four hundred twenty-seven million, three hundred forty-six thousand, three hundred eighty-one".