7473437381 has 2 divisors, whose sum is σ = 7473437382. Its totient is φ = 7473437380.

The previous prime is 7473437369. The next prime is 7473437383. The reversal of 7473437381 is 1837343747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6408002500 + 1065434881 = 80050^2 + 32641^2 .

It is a cyclic number.

It is not a de Polignac number, because 7473437381 - 2³⁰ = 6399695557 is a prime.

It is a super-2 number, since 2×7473437381² (a number of 21 digits) contains 22 as substring.

Together with 7473437383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7473437383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3736718690 + 3736718691.

It is an arithmetic number, because the mean of its divisors is an integer number (3736718691).

Almost surely, 2^7473437381 is an apocalyptic number.

It is an amenable number.

7473437381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7473437381 is an equidigital number, since it uses as much as digits as its factorization.

7473437381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 47.

The square root of 7473437381 is about 86449.0449976169. The cubic root of 7473437381 is about 1955.1202173574.

The spelling of 7473437381 in words is "seven billion, four hundred seventy-three million, four hundred thirty-seven thousand, three hundred eighty-one".