1942669440 has 512 divisors, whose sum is σ = 7437024000. Its totient is φ = 477757440.

The previous prime is 1942669409. The next prime is 1942669457. The reversal of 1942669440 is 449662491.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20027472 + ... + 20027568.

Almost surely, 2^1942669440 is an apocalyptic number.

1942669440 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 1942669440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3718512000).

1942669440 is an abundant number, since it is smaller than the sum of its proper divisors (5494354560).

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

1942669440 is a wasteful number, since it uses less digits than its factorization.

1942669440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 1942669440 is about 44075.7239305267. The cubic root of 1942669440 is about 1247.7654884801.

The spelling of 1942669440 in words is "one billion, nine hundred forty-two million, six hundred sixty-nine thousand, four hundred forty".