1951385016 has 96 divisors (see below), whose sum is σ = 5755121280. Its totient is φ = 549662400.

The previous prime is 1951385011. The next prime is 1951385017. The reversal of 1951385016 is 6105831591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951385011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71811 + ... + 95181.

It is an arithmetic number, because the mean of its divisors is an integer number (59949180).

Almost surely, 2^1951385016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1951385016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2877560640).

1951385016 is an abundant number, since it is smaller than the sum of its proper divisors (3803736264).

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

1951385016 is a wasteful number, since it uses less digits than its factorization.

1951385016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23465 (or 23454 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1951385016 is about 44174.4837660838. The cubic root of 1951385016 is about 1249.6286931292.

The spelling of 1951385016 in words is "one billion, nine hundred fifty-one million, three hundred eighty-five thousand, sixteen".