1946436640 has 96 divisors (see below), whose sum is σ = 4814401536. Its totient is φ = 742241280.

The previous prime is 1946436593. The next prime is 1946436643. The reversal of 1946436640 is 466346491.

It is not an unprimeable number, because it can be changed into a prime (1946436643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1408750 + ... + 1410130.

It is an arithmetic number, because the mean of its divisors is an integer number (50150016).

Almost surely, 2^1946436640 is an apocalyptic number.

1946436640 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 1946436640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2407200768).

1946436640 is an abundant number, since it is smaller than the sum of its proper divisors (2867964896).

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

1946436640 is a wasteful number, since it uses less digits than its factorization.

1946436640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 1946436640 is about 44118.4387756412. The cubic root of 1946436640 is about 1248.5715180399.

The spelling of 1946436640 in words is "one billion, nine hundred forty-six million, four hundred thirty-six thousand, six hundred forty".