1956894473952 has 144 divisors (see below), whose sum is σ = 6266653585920. Its totient is φ = 573869318400.

The previous prime is 1956894473917. The next prime is 1956894473957. The reversal of 1956894473952 is 2593744986591.

1956894473952 is a `hidden beast` number, since 1 + 9 + 5 + 68 + 9 + 4 + 473 + 95 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956894473957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9864802 + ... + 10061217.

It is an arithmetic number, because the mean of its divisors is an integer number (43518427680).

Almost surely, 2^{1956894473952} is an apocalyptic number.

1956894473952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1956894473952 is an abundant number, since it is smaller than the sum of its proper divisors (4309759111968).

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

1956894473952 is a wasteful number, since it uses less digits than its factorization.

1956894473952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19926077 (or 19926066 counting only the distinct ones).

The product of its digits is 587865600, while the sum is 72.

The spelling of 1956894473952 in words is "one trillion, nine hundred fifty-six billion, eight hundred ninety-four million, four hundred seventy-three thousand, nine hundred fifty-two".