1997680814 has 8 divisors (see below), whose sum is σ = 3000095280. Its totient is φ = 997649056.

The previous prime is 1997680807. The next prime is 1997680819. The reversal of 1997680814 is 4180867991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997680819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593579 + ... + 596934.

It is an arithmetic number, because the mean of its divisors is an integer number (375011910).

Almost surely, 2^1997680814 is an apocalyptic number.

1997680814 is a deficient number, since it is larger than the sum of its proper divisors (1002414466).

1997680814 is a wasteful number, since it uses less digits than its factorization.

1997680814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191354.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 1997680814 is about 44695.4227410369. The cubic root of 1997680814 is about 1259.4338629901.

The spelling of 1997680814 in words is "one billion, nine hundred ninety-seven million, six hundred eighty thousand, eight hundred fourteen".