1955820343 has 2 divisors, whose sum is σ = 1955820344. Its totient is φ = 1955820342.

The previous prime is 1955820311. The next prime is 1955820371. The reversal of 1955820343 is 3430285591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1955820343 - 2⁵ = 1955820311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1955820296 and 1955820305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1955820443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977910171 + 977910172.

It is an arithmetic number, because the mean of its divisors is an integer number (977910172).

Almost surely, 2^1955820343 is an apocalyptic number.

1955820343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955820343 is an equidigital number, since it uses as much as digits as its factorization.

1955820343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1955820343 is about 44224.6576357579. The cubic root of 1955820343 is about 1250.5747422033.

The spelling of 1955820343 in words is "one billion, nine hundred fifty-five million, eight hundred twenty thousand, three hundred forty-three".