1902685968 has 60 divisors (see below), whose sum is σ = 5638113468. Its totient is φ = 596920320.

The previous prime is 1902685963. The next prime is 1902685979. The reversal of 1902685968 is 8695862091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1309860864 + 592825104 = 36192^2 + 24348^2 .

It is not an unprimeable number, because it can be changed into a prime (1902685963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386173 + ... + 391068.

Almost surely, 2^1902685968 is an apocalyptic number.

1902685968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1902685968 is an abundant number, since it is smaller than the sum of its proper divisors (3735427500).

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

1902685968 is a wasteful number, since it uses less digits than its factorization.

1902685968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777272 (or 777263 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 1902685968 is about 43619.7887202586. The cubic root of 1902685968 is about 1239.1456932055.

The spelling of 1902685968 in words is "one billion, nine hundred two million, six hundred eighty-five thousand, nine hundred sixty-eight".