7398715145 has 4 divisors (see below), whose sum is σ = 8878458180. Its totient is φ = 5918972112.

The previous prime is 7398715133. The next prime is 7398715157. The reversal of 7398715145 is 5415178937.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5415178937 = 7 ⋅773596991.

It is an interprime number because it is at equal distance from previous prime (7398715133) and next prime (7398715157).

It can be written as a sum of positive squares in 2 ways, for example, as 1834151929 + 5564563216 = 42827^2 + 74596^2 .

It is a cyclic number.

It is not a de Polignac number, because 7398715145 - 2¹⁴ = 7398698761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7398715093 and 7398715102.

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, 739871510 + ... + 739871519.

It is an arithmetic number, because the mean of its divisors is an integer number (2219614545).

Almost surely, 2^7398715145 is an apocalyptic number.

It is an amenable number.

7398715145 is a deficient number, since it is larger than the sum of its proper divisors (1479743035).

7398715145 is a wasteful number, since it uses less digits than its factorization.

7398715145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479743034.

The product of its digits is 1058400, while the sum is 50.

The square root of 7398715145 is about 86015.7842782358. The cubic root of 7398715145 is about 1948.5823704808.

The spelling of 7398715145 in words is "seven billion, three hundred ninety-eight million, seven hundred fifteen thousand, one hundred forty-five".