45978163 has 16 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 35618400.

The previous prime is 45978143. The next prime is 45978167. The reversal of 45978163 is 36187954.

It is a cyclic number.

It is not a de Polignac number, because 45978163 - 2²¹ = 43881011 is a prime.

It is a super-3 number, since 3×45978163³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (45978167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12288 + ... + 15586.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 2^45978163 is an apocalyptic number.

45978163 is a deficient number, since it is larger than the sum of its proper divisors (11679437).

45978163 is a wasteful number, since it uses less digits than its factorization.

45978163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498.

The product of its digits is 181440, while the sum is 43.

The square root of 45978163 is about 6780.7199470263. The cubic root of 45978163 is about 358.2480802895.

The spelling of 45978163 in words is "forty-five million, nine hundred seventy-eight thousand, one hundred sixty-three".