1978210752 has 168 divisors, whose sum is σ = 6118286976. Its totient is φ = 562447872.

The previous prime is 1978210747. The next prime is 1978210753. The reversal of 1978210752 is 2570128791.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1978210753) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2662093 + ... + 2662835.

Almost surely, 2^1978210752 is an apocalyptic number.

1978210752 is a gapful number since it is divisible by the number (12) 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 1978210752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3059143488).

1978210752 is an abundant number, since it is smaller than the sum of its proper divisors (4140076224).

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

1978210752 is a wasteful number, since it uses less digits than its factorization.

1978210752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 1978210752 is about 44477.0811991974. The cubic root of 1978210752 is about 1255.3288772646.

The spelling of 1978210752 in words is "one billion, nine hundred seventy-eight million, two hundred ten thousand, seven hundred fifty-two".