1940978352 has 80 divisors (see below), whose sum is σ = 5210604000. Its totient is φ = 621852672.

The previous prime is 1940978267. The next prime is 1940978359. The reversal of 1940978352 is 2538790491.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1940978359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315724 + ... + 321812.

It is an arithmetic number, because the mean of its divisors is an integer number (65132550).

Almost surely, 2^1940978352 is an apocalyptic number.

1940978352 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 1940978352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2605302000).

1940978352 is an abundant number, since it is smaller than the sum of its proper divisors (3269625648).

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

1940978352 is a wasteful number, since it uses less digits than its factorization.

1940978352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358 (or 6352 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1940978352 is about 44056.5358601876. The cubic root of 1940978352 is about 1247.4033246502.

The spelling of 1940978352 in words is "one billion, nine hundred forty million, nine hundred seventy-eight thousand, three hundred fifty-two".