2147668445 has 16 divisors (see below), whose sum is σ = 2779900032. Its totient is φ = 1583426880.

The previous prime is 2147668427. The next prime is 2147668487. The reversal of 2147668445 is 5448667412.

It is a happy number.

It is not a de Polignac number, because 2147668445 - 2¹⁶ = 2147602909 is a prime.

It is a super-2 number, since 2×2147668445² = 9224959499297436050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2147668445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14834 + ... + 67196.

It is an arithmetic number, because the mean of its divisors is an integer number (173743752).

Almost surely, 2^2147668445 is an apocalyptic number.

It is an amenable number.

2147668445 is a deficient number, since it is larger than the sum of its proper divisors (632231587).

2147668445 is a wasteful number, since it uses less digits than its factorization.

2147668445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53012.

The product of its digits is 1290240, while the sum is 47.

The square root of 2147668445 is about 46342.9438534066. The cubic root of 2147668445 is about 1290.1961613040.

The spelling of 2147668445 in words is "two billion, one hundred forty-seven million, six hundred sixty-eight thousand, four hundred forty-five".