39145992218 has 16 divisors (see below), whose sum is σ = 60420923136. Its totient is φ = 19009966560.

The previous prime is 39145992211. The next prime is 39145992227. The reversal of 39145992218 is 81229954193.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 39145992218.

It is not an unprimeable number, because it can be changed into a prime (39145992211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052096 + ... + 1088667.

It is an arithmetic number, because the mean of its divisors is an integer number (3776307696).

Almost surely, 2^39145992218 is an apocalyptic number.

39145992218 is a deficient number, since it is larger than the sum of its proper divisors (21274930918).

39145992218 is a wasteful number, since it uses less digits than its factorization.

39145992218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141029.

The product of its digits is 1399680, while the sum is 53.

The spelling of 39145992218 in words is "thirty-nine billion, one hundred forty-five million, nine hundred ninety-two thousand, two hundred eighteen".