1946798478 has 24 divisors (see below), whose sum is σ = 4363515000. Its totient is φ = 626555664.

The previous prime is 1946798437. The next prime is 1946798479. The reversal of 1946798478 is 8748976491.

1946798478 is a `hidden beast` number, since 1 + 94 + 6 + 79 + 8 + 478 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1946798479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1864228 + ... + 1865271.

It is an arithmetic number, because the mean of its divisors is an integer number (181813125).

Almost surely, 2^1946798478 is an apocalyptic number.

1946798478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1946798478 is an abundant number, since it is smaller than the sum of its proper divisors (2416716522).

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

1946798478 is a wasteful number, since it uses less digits than its factorization.

1946798478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729536 (or 3729533 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The square root of 1946798478 is about 44122.5393421548. The cubic root of 1946798478 is about 1248.6488820838.

The spelling of 1946798478 in words is "one billion, nine hundred forty-six million, seven hundred ninety-eight thousand, four hundred seventy-eight".