1955103280 has 80 divisors (see below), whose sum is σ = 4903123680. Its totient is φ = 720728064.

The previous prime is 1955103277. The next prime is 1955103307. The reversal of 1955103280 is 823015591.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917256 + ... + 919384.

It is an arithmetic number, because the mean of its divisors is an integer number (61289046).

Almost surely, 2^1955103280 is an apocalyptic number.

1955103280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1955103280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451561840).

1955103280 is an abundant number, since it is smaller than the sum of its proper divisors (2948020400).

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

1955103280 is a wasteful number, since it uses less digits than its factorization.

1955103280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3032 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 1955103280 is about 44216.5498427908. The cubic root of 1955103280 is about 1250.4218906573.

The spelling of 1955103280 in words is "one billion, nine hundred fifty-five million, one hundred three thousand, two hundred eighty".