1946247940 has 144 divisors (see below), whose sum is σ = 5178273408. Its totient is φ = 601316352.

The previous prime is 1946247923. The next prime is 1946247943. The reversal of 1946247940 is 497426491.

It is not an unprimeable number, because it can be changed into a prime (1946247943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1016424 + ... + 1018336.

It is an arithmetic number, because the mean of its divisors is an integer number (35960232).

Almost surely, 2^1946247940 is an apocalyptic number.

1946247940 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 1946247940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2589136704).

1946247940 is an abundant number, since it is smaller than the sum of its proper divisors (3232025468).

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

1946247940 is a wasteful number, since it uses less digits than its factorization.

1946247940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1946247940 is about 44116.3001621850. The cubic root of 1946247940 is about 1248.5311685701.

The spelling of 1946247940 in words is "one billion, nine hundred forty-six million, two hundred forty-seven thousand, nine hundred forty".