19913002 has 8 divisors (see below), whose sum is σ = 29995200. Its totient is φ = 9914604.

The previous prime is 19912987. The next prime is 19913011. The reversal of 19913002 is 20031991.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20352 + ... + 21307.

It is an arithmetic number, because the mean of its divisors is an integer number (3749400).

Almost surely, 2^19913002 is an apocalyptic number.

19913002 is a deficient number, since it is larger than the sum of its proper divisors (10082198).

19913002 is a wasteful number, since it uses less digits than its factorization.

19913002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41900.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 19913002 is about 4462.3986823232. The cubic root of 19913002 is about 271.0476080900.

Adding to 19913002 its reverse (20031991), we get a palindrome (39944993).

The spelling of 19913002 in words is "nineteen million, nine hundred thirteen thousand, two".