1955136913 has 4 divisors (see below), whose sum is σ = 1962045808. Its totient is φ = 1948228020.

The previous prime is 1955136893. The next prime is 1955136949. The reversal of 1955136913 is 3196315591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1955136913 - 2⁹ = 1955136401 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 1955136913.

It is not an unprimeable number, because it can be changed into a prime (1955146913) 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, 3454023 + ... + 3454588.

It is an arithmetic number, because the mean of its divisors is an integer number (490511452).

Almost surely, 2^1955136913 is an apocalyptic number.

It is an amenable number.

1955136913 is a deficient number, since it is larger than the sum of its proper divisors (6908895).

1955136913 is an equidigital number, since it uses as much as digits as its factorization.

1955136913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908894.

The product of its digits is 109350, while the sum is 43.

The square root of 1955136913 is about 44216.9301625520. The cubic root of 1955136913 is about 1250.4290608153.

The spelling of 1955136913 in words is "one billion, nine hundred fifty-five million, one hundred thirty-six thousand, nine hundred thirteen".