1964155068 has 60 divisors (see below), whose sum is σ = 5171748120. Its totient is φ = 649993248.

The previous prime is 1964155057. The next prime is 1964155073. The reversal of 1964155068 is 8605514691.

1964155068 is a `hidden beast` number, since 1 + 96 + 4 + 1 + 550 + 6 + 8 = 666.

It is a congruent 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, 23230 + ... + 66842.

It is an arithmetic number, because the mean of its divisors is an integer number (86195802).

Almost surely, 2^1964155068 is an apocalyptic number.

1964155068 is a gapful number since it is divisible by the number (18) 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 1964155068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2585874060).

1964155068 is an abundant number, since it is smaller than the sum of its proper divisors (3207593052).

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

1964155068 is a wasteful number, since it uses less digits than its factorization.

1964155068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43768 (or 43757 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1964155068 is about 44318.7891080070. The cubic root of 1964155068 is about 1252.3486654260.

The spelling of 1964155068 in words is "one billion, nine hundred sixty-four million, one hundred fifty-five thousand, sixty-eight".