1955538469 has 4 divisors (see below), whose sum is σ = 2022970860. Its totient is φ = 1888106080.

The previous prime is 1955538461. The next prime is 1955538479. The reversal of 1955538469 is 9648355591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1510876900 + 444661569 = 38870^2 + 21087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1955538469 - 2³ = 1955538461 is a prime.

It is a super-2 number, since 2×1955538469² = 7648261407477727922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955538461) 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, 33716152 + ... + 33716209.

It is an arithmetic number, because the mean of its divisors is an integer number (505742715).

Almost surely, 2^1955538469 is an apocalyptic number.

It is an amenable number.

1955538469 is a deficient number, since it is larger than the sum of its proper divisors (67432391).

1955538469 is an equidigital number, since it uses as much as digits as its factorization.

1955538469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67432390.

The product of its digits is 5832000, while the sum is 55.

The square root of 1955538469 is about 44221.4706788456. The cubic root of 1955538469 is about 1250.5146614565.

The spelling of 1955538469 in words is "one billion, nine hundred fifty-five million, five hundred thirty-eight thousand, four hundred sixty-nine".