1968149152 has 24 divisors (see below), whose sum is σ = 3894882516. Its totient is φ = 978972672.

The previous prime is 1968149149. The next prime is 1968149167. The reversal of 1968149152 is 2519418691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1616361616 + 351787536 = 40204^2 + 18756^2 .

It is a super-2 number, since 2×1968149152² = 7747222169036638208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153163 + ... + 165514.

Almost surely, 2^1968149152 is an apocalyptic number.

It is an amenable number.

1968149152 is a deficient number, since it is larger than the sum of its proper divisors (1926733364).

1968149152 is a wasteful number, since it uses less digits than its factorization.

1968149152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318880 (or 318872 counting only the distinct ones).

The product of its digits is 155520, while the sum is 46.

The square root of 1968149152 is about 44363.8270666542. The cubic root of 1968149152 is about 1253.1969689675.

The spelling of 1968149152 in words is "one billion, nine hundred sixty-eight million, one hundred forty-nine thousand, one hundred fifty-two".