1955314609 has 4 divisors (see below), whose sum is σ = 1955412340. Its totient is φ = 1955216880.

The previous prime is 1955314591. The next prime is 1955314631. The reversal of 1955314609 is 9064135591.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 162639009 + 1792675600 = 12753^2 + 42340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1955314609 - 2⁷ = 1955314481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1955314649) 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, 6762 + ... + 62899.

It is an arithmetic number, because the mean of its divisors is an integer number (488853085).

Almost surely, 2^1955314609 is an apocalyptic number.

It is an amenable number.

1955314609 is a deficient number, since it is larger than the sum of its proper divisors (97731).

1955314609 is an equidigital number, since it uses as much as digits as its factorization.

1955314609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97730.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 1955314609 is about 44218.9394829862. The cubic root of 1955314609 is about 1250.4669421370.

The spelling of 1955314609 in words is "one billion, nine hundred fifty-five million, three hundred fourteen thousand, six hundred nine".