1954058309 has 32 divisors (see below), whose sum is σ = 2433792000. Its totient is φ = 1564738560.

The previous prime is 1954058303. The next prime is 1954058317. The reversal of 1954058309 is 9038504591.

It is a happy number.

It is not a de Polignac number, because 1954058309 - 2¹² = 1954054213 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 1954058309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954058303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305189 + ... + 311525.

It is an arithmetic number, because the mean of its divisors is an integer number (76056000).

Almost surely, 2^1954058309 is an apocalyptic number.

It is an amenable number.

1954058309 is a deficient number, since it is larger than the sum of its proper divisors (479733691).

1954058309 is an equidigital number, since it uses as much as digits as its factorization.

1954058309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6418 (or 6404 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 1954058309 is about 44204.7317489881. The cubic root of 1954058309 is about 1250.1990742139.

It can be divided in two parts, 195 and 4058309, that added together give a palindrome (4058504).

The spelling of 1954058309 in words is "one billion, nine hundred fifty-four million, fifty-eight thousand, three hundred nine".