1951146816 has 28 divisors (see below), whose sum is σ = 5162409792. Its totient is φ = 650382208.

The previous prime is 1951146773. The next prime is 1951146829. The reversal of 1951146816 is 6186411591.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5080920 + ... + 5081303.

Almost surely, 2^1951146816 is an apocalyptic number.

1951146816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1951146816 is an abundant number, since it is smaller than the sum of its proper divisors (3211262976).

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

1951146816 is a wasteful number, since it uses less digits than its factorization.

1951146816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162238 (or 10162228 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 1951146816 is about 44171.7875572180. The cubic root of 1951146816 is about 1249.5778448574.

It can be divided in two parts, 195114 and 6816, that added together give a triangular number (201930 = T₆₃₅).

The spelling of 1951146816 in words is "one billion, nine hundred fifty-one million, one hundred forty-six thousand, eight hundred sixteen".