1994946975 has 240 divisors, whose sum is σ = 4580421120. Its totient is φ = 838252800.

The previous prime is 1994946949. The next prime is 1994946979. The reversal of 1994946975 is 5796494991.

1994946975 is a `hidden beast` number, since 19 + 9 + 494 + 69 + 75 = 666.

It is not a de Polignac number, because 1994946975 - 2¹¹ = 1994944927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994946979) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 9454620 + ... + 9454830.

It is an arithmetic number, because the mean of its divisors is an integer number (19085088).

Almost surely, 2^1994946975 is an apocalyptic number.

1994946975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1994946975 is an abundant number, since it is smaller than the sum of its proper divisors (2585474145).

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

1994946975 is a wasteful number, since it uses less digits than its factorization.

1994946975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 278 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The square root of 1994946975 is about 44664.8292843486. The cubic root of 1994946975 is about 1258.8590862768.

The spelling of 1994946975 in words is "one billion, nine hundred ninety-four million, nine hundred forty-six thousand, nine hundred seventy-five".