1964231280 has 480 divisors, whose sum is σ = 7721505792. Its totient is φ = 442675200.

The previous prime is 1964231237. The next prime is 1964231281. The reversal of 1964231280 is 821324691.

1964231280 is a `hidden beast` number, since 1 + 9 + 642 + 3 + 1 + 2 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964231281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7468429 + ... + 7468691.

Almost surely, 2^1964231280 is an apocalyptic number.

1964231280 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 1964231280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3860752896).

1964231280 is an abundant number, since it is smaller than the sum of its proper divisors (5757274512).

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

1964231280 is a wasteful number, since it uses less digits than its factorization.

1964231280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1964231280 is about 44319.6489155769. The cubic root of 1964231280 is about 1252.3648628508.

The spelling of 1964231280 in words is "one billion, nine hundred sixty-four million, two hundred thirty-one thousand, two hundred eighty".