1968733515 has 24 divisors (see below), whose sum is σ = 3664256400. Its totient is φ = 899992128.

The previous prime is 1968733499. The next prime is 1968733519. The reversal of 1968733515 is 5153378691.

It is not a de Polignac number, because 1968733515 - 2⁴ = 1968733499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1968733519) 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, 1338540 + ... + 1340009.

It is an arithmetic number, because the mean of its divisors is an integer number (152677350).

Almost surely, 2^1968733515 is an apocalyptic number.

1968733515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1968733515 is a deficient number, since it is larger than the sum of its proper divisors (1695522885).

1968733515 is a wasteful number, since it uses less digits than its factorization.

1968733515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678571 (or 2678564 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 1968733515 is about 44370.4126079531. The cubic root of 1968733515 is about 1253.3209855635.

The spelling of 1968733515 in words is "one billion, nine hundred sixty-eight million, seven hundred thirty-three thousand, five hundred fifteen".