1953853489 has 6 divisors (see below), whose sum is σ = 2272850034. Its totient is φ = 1674731520.

The previous prime is 1953853463. The next prime is 1953853529. The reversal of 1953853489 is 9843583591.

It can be written as a sum of positive squares in only one way, i.e., 1716693489 + 237160000 = 41433^2 + 15400^2 .

It is not a de Polignac number, because 1953853489 - 2¹¹ = 1953851441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1953853789) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19937232 + ... + 19937329.

It is an arithmetic number, because the mean of its divisors is an integer number (378808339).

Almost surely, 2^1953853489 is an apocalyptic number.

It is an amenable number.

1953853489 is a deficient number, since it is larger than the sum of its proper divisors (318996545).

1953853489 is an equidigital number, since it uses as much as digits as its factorization.

1953853489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39874575 (or 39874568 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The square root of 1953853489 is about 44202.4149679630. The cubic root of 1953853489 is about 1250.1553916686.

The spelling of 1953853489 in words is "one billion, nine hundred fifty-three million, eight hundred fifty-three thousand, four hundred eighty-nine".