1955853983 has 2 divisors, whose sum is σ = 1955853984. Its totient is φ = 1955853982.

The previous prime is 1955853979. The next prime is 1955854001. The reversal of 1955853983 is 3893585591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1955853983 - 2² = 1955853979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1955853923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977926991 + 977926992.

It is an arithmetic number, because the mean of its divisors is an integer number (977926992).

Almost surely, 2^1955853983 is an apocalyptic number.

1955853983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955853983 is an equidigital number, since it uses as much as digits as its factorization.

1955853983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832000, while the sum is 56.

The square root of 1955853983 is about 44225.0379649357. The cubic root of 1955853983 is about 1250.5819121006.

The spelling of 1955853983 in words is "one billion, nine hundred fifty-five million, eight hundred fifty-three thousand, nine hundred eighty-three".