145884807939 has 32 divisors (see below), whose sum is σ = 217267412544. Its totient is φ = 86483980800.

The previous prime is 145884807889. The next prime is 145884807961. The reversal of 145884807939 is 939708488541.

It is not a de Polignac number, because 145884807939 - 2¹⁷ = 145884676867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145884807939.

It is not an unprimeable number, because it can be changed into a prime (145884807989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354744 + ... + 646229.

It is an arithmetic number, because the mean of its divisors is an integer number (6789606642).

Almost surely, 2^145884807939 is an apocalyptic number.

145884807939 is a deficient number, since it is larger than the sum of its proper divisors (71382604605).

145884807939 is a wasteful number, since it uses less digits than its factorization.

145884807939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001127.

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 145884807939 in words is "one hundred forty-five billion, eight hundred eighty-four million, eight hundred seven thousand, nine hundred thirty-nine".