1955494805963 has 4 divisors (see below), whose sum is σ = 1955983317288. Its totient is φ = 1955006294640.

The previous prime is 1955494805909. The next prime is 1955494805981. The reversal of 1955494805963 is 3695084945591.

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

It is a cyclic number.

It is not a de Polignac number, because 1955494805963 - 2¹⁴ = 1955494789579 is a prime.

It is a super-2 number, since 2×1955494805963² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1955494805893 and 1955494805902.

It is not an unprimeable number, because it can be changed into a prime (1955494805263) 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, 244249658 + ... + 244257663.

It is an arithmetic number, because the mean of its divisors is an integer number (488995829322).

Almost surely, 2^{1955494805963} is an apocalyptic number.

1955494805963 is a deficient number, since it is larger than the sum of its proper divisors (488511325).

1955494805963 is an equidigital number, since it uses as much as digits as its factorization.

1955494805963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488511324.

The product of its (nonzero) digits is 209952000, while the sum is 68.

The spelling of 1955494805963 in words is "one trillion, nine hundred fifty-five billion, four hundred ninety-four million, eight hundred five thousand, nine hundred sixty-three".