1951486320168 has 144 divisors (see below), whose sum is σ = 6707102931360. Its totient is φ = 506879553600.

The previous prime is 1951486320163. The next prime is 1951486320187. The reversal of 1951486320168 is 8610236841591.

It is a happy number.

1951486320168 is a `hidden beast` number, since 1 + 9 + 514 + 8 + 63 + 2 + 0 + 1 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (1951486320163) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25104028 + ... + 25181643.

It is an arithmetic number, because the mean of its divisors is an integer number (46577103690).

Almost surely, 2^{1951486320168} is an apocalyptic number.

1951486320168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1951486320168 is an abundant number, since it is smaller than the sum of its proper divisors (4755616611192).

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

1951486320168 is a wasteful number, since it uses less digits than its factorization.

1951486320168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50285708 (or 50285694 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 1951486320168 in words is "one trillion, nine hundred fifty-one billion, four hundred eighty-six million, three hundred twenty thousand, one hundred sixty-eight".