1954802789 has 4 divisors (see below), whose sum is σ = 1959960960. Its totient is φ = 1949644620.

The previous prime is 1954802779. The next prime is 1954802791. The reversal of 1954802789 is 9872084591.

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 a cyclic number.

It is not a de Polignac number, because 1954802789 - 2¹² = 1954798693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1954802789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954802779) 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, 2578517 + ... + 2579274.

It is an arithmetic number, because the mean of its divisors is an integer number (489990240).

Almost surely, 2^1954802789 is an apocalyptic number.

It is an amenable number.

1954802789 is a deficient number, since it is larger than the sum of its proper divisors (5158171).

1954802789 is an equidigital number, since it uses as much as digits as its factorization.

1954802789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158170.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The square root of 1954802789 is about 44213.1517650574. The cubic root of 1954802789 is about 1250.3578258787.

It can be divided in two parts, 1954802 and 789, that added together give a palindrome (1955591).

The spelling of 1954802789 in words is "one billion, nine hundred fifty-four million, eight hundred two thousand, seven hundred eighty-nine".