1999297514 has 16 divisors (see below), whose sum is σ = 3075488136. Its totient is φ = 974188800.

The previous prime is 1999297493. The next prime is 1999297519. The reversal of 1999297514 is 4157929991.

It can be written as a sum of positive squares in 4 ways, for example, as 1322413225 + 676884289 = 36365^2 + 26017^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1999297514.

It is not an unprimeable number, because it can be changed into a prime (1999297519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63824 + ... + 89844.

Almost surely, 2^1999297514 is an apocalyptic number.

1999297514 is a deficient number, since it is larger than the sum of its proper divisors (1076190622).

1999297514 is a wasteful number, since it uses less digits than its factorization.

1999297514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27001.

The product of its digits is 1837080, while the sum is 56.

The square root of 1999297514 is about 44713.5048279600. The cubic root of 1999297514 is about 1259.7735198041.

The spelling of 1999297514 in words is "one billion, nine hundred ninety-nine million, two hundred ninety-seven thousand, five hundred fourteen".