1996267878 has 48 divisors (see below), whose sum is σ = 4870674432. Its totient is φ = 585414000.

The previous prime is 1996267873. The next prime is 1996267907. The reversal of 1996267878 is 8787626991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996267873) 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, 156478 + ... + 168753.

It is an arithmetic number, because the mean of its divisors is an integer number (101472384).

Almost surely, 2^1996267878 is an apocalyptic number.

1996267878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1996267878 is an abundant number, since it is smaller than the sum of its proper divisors (2874406554).

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

1996267878 is a wasteful number, since it uses less digits than its factorization.

1996267878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325281 (or 325278 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 1996267878 is about 44679.6136733522. The cubic root of 1996267878 is about 1259.1368654023.

The spelling of 1996267878 in words is "one billion, nine hundred ninety-six million, two hundred sixty-seven thousand, eight hundred seventy-eight".