7738404445 has 4 divisors (see below), whose sum is σ = 9286085340. Its totient is φ = 6190723552.

The previous prime is 7738404413. The next prime is 7738404451. The reversal of 7738404445 is 5444048377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5444048377 = 6277 ⋅867301.

It can be written as a sum of positive squares in 2 ways, for example, as 1332323001 + 6406081444 = 36501^2 + 80038^2 .

It is a cyclic number.

It is not a de Polignac number, because 7738404445 - 2⁵ = 7738404413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7738404395 and 7738404404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773840440 + ... + 773840449.

It is an arithmetic number, because the mean of its divisors is an integer number (2321521335).

Almost surely, 2^7738404445 is an apocalyptic number.

It is an amenable number.

7738404445 is a deficient number, since it is larger than the sum of its proper divisors (1547680895).

7738404445 is a wasteful number, since it uses less digits than its factorization.

7738404445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547680894.

The product of its (nonzero) digits is 1505280, while the sum is 46.

The square root of 7738404445 is about 87968.2013286619. The cubic root of 7738404445 is about 1977.9583455339.

The spelling of 7738404445 in words is "seven billion, seven hundred thirty-eight million, four hundred four thousand, four hundred forty-five".