1955859164 has 48 divisors (see below), whose sum is σ = 4126348800. Its totient is φ = 792421056.

The previous prime is 1955859149. The next prime is 1955859167. The reversal of 1955859164 is 4619585591.

It is a super-3 number, since 3×1955859164³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955859167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263942 + ... + 271250.

It is an arithmetic number, because the mean of its divisors is an integer number (85965600).

Almost surely, 2^1955859164 is an apocalyptic number.

1955859164 is a gapful number since it is divisible by the number (14) 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 1955859164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2063174400).

1955859164 is an abundant number, since it is smaller than the sum of its proper divisors (2170489636).

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

1955859164 is a wasteful number, since it uses less digits than its factorization.

1955859164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842 (or 7840 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 53.

The square root of 1955859164 is about 44225.0965403129. The cubic root of 1955859164 is about 1250.5830163513.

The spelling of 1955859164 in words is "one billion, nine hundred fifty-five million, eight hundred fifty-nine thousand, one hundred sixty-four".