1975224139 has 4 divisors (see below), whose sum is σ = 2257399024. Its totient is φ = 1693049256.

The previous prime is 1975224137. The next prime is 1975224143. The reversal of 1975224139 is 9314225791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1975224139 - 2¹ = 1975224137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1975224095 and 1975224104.

It is not an unprimeable number, because it can be changed into a prime (1975224137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141087432 + ... + 141087445.

It is an arithmetic number, because the mean of its divisors is an integer number (564349756).

Almost surely, 2^1975224139 is an apocalyptic number.

1975224139 is a deficient number, since it is larger than the sum of its proper divisors (282174885).

1975224139 is an equidigital number, since it uses as much as digits as its factorization.

1975224139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282174884.

The product of its digits is 136080, while the sum is 43.

The square root of 1975224139 is about 44443.4937758048. The cubic root of 1975224139 is about 1254.6968128421.

The spelling of 1975224139 in words is "one billion, nine hundred seventy-five million, two hundred twenty-four thousand, one hundred thirty-nine".