1955455950 has 96 divisors (see below), whose sum is σ = 5597498880. Its totient is φ = 442512000.

The previous prime is 1955455949. The next prime is 1955455973. The reversal of 1955455950 is 595545591.

It is a self number, because there is not a number n which added to its sum of digits gives 1955455950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96831 + ... + 115269.

It is an arithmetic number, because the mean of its divisors is an integer number (58307280).

Almost surely, 2^1955455950 is an apocalyptic number.

1955455950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1955455950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798749440).

1955455950 is an abundant number, since it is smaller than the sum of its proper divisors (3642042930).

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

1955455950 is a wasteful number, since it uses less digits than its factorization.

1955455950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18562 (or 18557 counting only the distinct ones).

The product of its (nonzero) digits is 1012500, while the sum is 48.

The square root of 1955455950 is about 44220.5376493774. The cubic root of 1955455950 is about 1250.4970716430.

The spelling of 1955455950 in words is "one billion, nine hundred fifty-five million, four hundred fifty-five thousand, nine hundred fifty".