3794455721513 has 4 divisors (see below), whose sum is σ = 3794474433108. Its totient is φ = 3794437009920.

The previous prime is 3794455721471. The next prime is 3794455721521. The reversal of 3794455721513 is 3151275544973.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3743265301504 + 51190420009 = 1934752^2 + 226253^2 .

It is a cyclic number.

It is not a de Polignac number, because 3794455721513 - 2⁶ = 3794455721449 is a prime.

It is a super-2 number, since 2×3794455721513² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3794455721113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9048248 + ... + 9458313.

It is an arithmetic number, because the mean of its divisors is an integer number (948618608277).

Almost surely, 2^{3794455721513} is an apocalyptic number.

It is an amenable number.

3794455721513 is a deficient number, since it is larger than the sum of its proper divisors (18711595).

3794455721513 is a wasteful number, since it uses less digits than its factorization.

3794455721513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18711594.

The product of its digits is 15876000, while the sum is 56.

The spelling of 3794455721513 in words is "three trillion, seven hundred ninety-four billion, four hundred fifty-five million, seven hundred twenty-one thousand, five hundred thirteen".