1955799445 has 16 divisors (see below), whose sum is σ = 2378856960. Its totient is φ = 1543411584.

The previous prime is 1955799431. The next prime is 1955799449. The reversal of 1955799445 is 5449975591.

It is a cyclic number.

It is not a de Polignac number, because 1955799445 - 2⁵ = 1955799413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1955799445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955799449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 702897 + ... + 705673.

It is an arithmetic number, because the mean of its divisors is an integer number (148678560).

Almost surely, 2^1955799445 is an apocalyptic number.

It is an amenable number.

1955799445 is a deficient number, since it is larger than the sum of its proper divisors (423057515).

1955799445 is a wasteful number, since it uses less digits than its factorization.

1955799445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644.

The product of its digits is 10206000, while the sum is 58.

The square root of 1955799445 is about 44224.4213642191. The cubic root of 1955799445 is about 1250.5702880443.

The spelling of 1955799445 in words is "one billion, nine hundred fifty-five million, seven hundred ninety-nine thousand, four hundred forty-five".