1955905168 has 30 divisors (see below), whose sum is σ = 4408272726. Its totient is φ = 838244736.

The previous prime is 1955905139. The next prime is 1955905183. The reversal of 1955905168 is 8615095591.

It can be written as a sum of positive squares in only one way, i.e., 1650634384 + 305270784 = 40628^2 + 17472^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1246605 + ... + 1248172.

Almost surely, 2^1955905168 is an apocalyptic number.

It is an amenable number.

1955905168 is an abundant number, since it is smaller than the sum of its proper divisors (2452367558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1955905168 is a wasteful number, since it uses less digits than its factorization.

1955905168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494799 (or 2494786 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 49.

The square root of 1955905168 is about 44225.6166491774. The cubic root of 1955905168 is about 1250.5928213125.

The spelling of 1955905168 in words is "one billion, nine hundred fifty-five million, nine hundred five thousand, one hundred sixty-eight".