19799002 has 4 divisors (see below), whose sum is σ = 29698506. Its totient is φ = 9899500.

The previous prime is 19798991. The next prime is 19799027. The reversal of 19799002 is 20099791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20099791 = 43 ⋅467437.

It can be written as a sum of positive squares in only one way, i.e., 19527561 + 271441 = 4419^2 + 521^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949749 + ... + 4949752.

Almost surely, 2^19799002 is an apocalyptic number.

19799002 is a deficient number, since it is larger than the sum of its proper divisors (9899504).

19799002 is an equidigital number, since it uses as much as digits as its factorization.

19799002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9899503.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 19799002 is about 4449.6069489338. The cubic root of 19799002 is about 270.5293774889.

It can be divided in two parts, 197 and 99002, that added together give a palindrome (99199).

The spelling of 19799002 in words is "nineteen million, seven hundred ninety-nine thousand, two".