1968735351 has 16 divisors (see below), whose sum is σ = 2870437248. Its totient is φ = 1190330400.

The previous prime is 1968735313. The next prime is 1968735359. The reversal of 1968735351 is 1535378691.

It is not a de Polignac number, because 1968735351 - 2⁹ = 1968734839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1968735351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968735359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56961 + ... + 84746.

It is an arithmetic number, because the mean of its divisors is an integer number (179402328).

Almost surely, 2^1968735351 is an apocalyptic number.

1968735351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1968735351 is a deficient number, since it is larger than the sum of its proper divisors (901701897).

1968735351 is a wasteful number, since it uses less digits than its factorization.

1968735351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142142.

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

The square root of 1968735351 is about 44370.4332974110. The cubic root of 1968735351 is about 1253.3213751704.

The spelling of 1968735351 in words is "one billion, nine hundred sixty-eight million, seven hundred thirty-five thousand, three hundred fifty-one".