1955820330 has 40 divisors (see below), whose sum is σ = 5258985732. Its totient is φ = 521551872.

The previous prime is 1955820311. The next prime is 1955820343. The reversal of 1955820330 is 330285591.

1955820330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1898257761 + 57562569 = 43569^2 + 7587^2 .

It is a super-4 number, since 4×1955820330⁴ (a number of 38 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1206487 + ... + 1208106.

Almost surely, 2^1955820330 is an apocalyptic number.

1955820330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1955820330 is an abundant number, since it is smaller than the sum of its proper divisors (3303165402).

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

1955820330 is a wasteful number, since it uses less digits than its factorization.

1955820330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414612 (or 2414603 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1955820330 is about 44224.6574887811. The cubic root of 1955820330 is about 1250.5747394325.

The spelling of 1955820330 in words is "one billion, nine hundred fifty-five million, eight hundred twenty thousand, three hundred thirty".