1955433440 has 24 divisors (see below), whose sum is σ = 4619711880. Its totient is φ = 782173312.

The previous prime is 1955433421. The next prime is 1955433451. The reversal of 1955433440 is 443345591.

It is a junction number, because it is equal to n+sod(n) for n = 1955433394 and 1955433403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6110570 + ... + 6110889.

It is an arithmetic number, because the mean of its divisors is an integer number (192487995).

Almost surely, 2^1955433440 is an apocalyptic number.

1955433440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1955433440 is an abundant number, since it is smaller than the sum of its proper divisors (2664278440).

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

1955433440 is a wasteful number, since it uses less digits than its factorization.

1955433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221474 (or 12221466 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 1955433440 is about 44220.2831288991. The cubic root of 1955433440 is about 1250.4922733081.

The spelling of 1955433440 in words is "one billion, nine hundred fifty-five million, four hundred thirty-three thousand, four hundred forty".