1872242769 has 4 divisors (see below), whose sum is σ = 2496323696. Its totient is φ = 1248161844.

The previous prime is 1872242761. The next prime is 1872242773. The reversal of 1872242769 is 9672422781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1872242769 - 2³ = 1872242761 is a prime.

It is a super-2 number, since 2×1872242769² = 7010585972145574722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1872242761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312040459 + ... + 312040464.

It is an arithmetic number, because the mean of its divisors is an integer number (624080924).

Almost surely, 2^1872242769 is an apocalyptic number.

It is an amenable number.

1872242769 is a deficient number, since it is larger than the sum of its proper divisors (624080927).

1872242769 is an equidigital number, since it uses as much as digits as its factorization.

1872242769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624080926.

The product of its digits is 677376, while the sum is 48.

The square root of 1872242769 is about 43269.4207148651. The cubic root of 1872242769 is about 1232.5013036315.

The spelling of 1872242769 in words is "one billion, eight hundred seventy-two million, two hundred forty-two thousand, seven hundred sixty-nine".