1953119489 has 2 divisors, whose sum is σ = 1953119490. Its totient is φ = 1953119488.

The previous prime is 1953119431. The next prime is 1953119491. The reversal of 1953119489 is 9849113591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1828417600 + 124701889 = 42760^2 + 11167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1953119489 - 2²⁴ = 1936342273 is a prime.

It is a super-2 number, since 2×1953119489² = 7629351476623242242, which contains 22 as substring.

Together with 1953119491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1953119429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976559744 + 976559745.

It is an arithmetic number, because the mean of its divisors is an integer number (976559745).

Almost surely, 2^1953119489 is an apocalyptic number.

It is an amenable number.

1953119489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953119489 is an equidigital number, since it uses as much as digits as its factorization.

1953119489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 50.

The square root of 1953119489 is about 44194.1114742677. Note that the first 3 decimals coincide. The cubic root of 1953119489 is about 1249.9988243189.

The spelling of 1953119489 in words is "one billion, nine hundred fifty-three million, one hundred nineteen thousand, four hundred eighty-nine".