1946915838 has 80 divisors (see below), whose sum is σ = 4997028960. Its totient is φ = 555004224.

The previous prime is 1946915813. The next prime is 1946915857. The reversal of 1946915838 is 8385196491.

1946915838 is a `hidden beast` number, since 19 + 46 + 9 + 1 + 583 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 575520 + ... + 578892.

It is an arithmetic number, because the mean of its divisors is an integer number (62462862).

Almost surely, 2^1946915838 is an apocalyptic number.

1946915838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1946915838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2498514480).

1946915838 is an abundant number, since it is smaller than the sum of its proper divisors (3050113122).

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

1946915838 is a wasteful number, since it uses less digits than its factorization.

1946915838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903 (or 3894 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 1946915838 is about 44123.8692546336. The cubic root of 1946915838 is about 1248.6739725918.

The spelling of 1946915838 in words is "one billion, nine hundred forty-six million, nine hundred fifteen thousand, eight hundred thirty-eight".