45994378369 has 3 divisors (see below), whose sum is σ = 45994592833. Its totient is φ = 45994163906.

The previous prime is 45994378357. The next prime is 45994378379. The reversal of 45994378369 is 96387349954.

The square root of 45994378369 is 214463.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 45994378369 - 2⁵ = 45994378337 is a prime.

It is a super-2 number, since 2×45994378369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45994378319) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 107232 + ... + 321694.

Almost surely, 2^45994378369 is an apocalyptic number.

45994378369 is the 214463-rd square number.

45994378369 is the 107232-nd centered octagonal number.

It is an amenable number.

45994378369 is a deficient number, since it is larger than the sum of its proper divisors (214464).

45994378369 is an frugal number, since it uses more digits than its factorization.

45994378369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428926 (or 214463 counting only the distinct ones).

The product of its digits is 176359680, while the sum is 67.

The spelling of 45994378369 in words is "forty-five billion, nine hundred ninety-four million, three hundred seventy-eight thousand, three hundred sixty-nine".