19930516 has 6 divisors (see below), whose sum is σ = 34878410. Its totient is φ = 9965256.

The previous prime is 19930507. The next prime is 19930523. The reversal of 19930516 is 61503991.

It can be written as a sum of positive squares in only one way, i.e., 18922500 + 1008016 = 4350^2 + 1004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2491311 + ... + 2491318.

Almost surely, 2^19930516 is an apocalyptic number.

It is an amenable number.

19930516 is a deficient number, since it is larger than the sum of its proper divisors (14947894).

19930516 is a wasteful number, since it uses less digits than its factorization.

19930516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4982633 (or 4982631 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 19930516 is about 4464.3606485140. The cubic root of 19930516 is about 271.1270492636.

The spelling of 19930516 in words is "nineteen million, nine hundred thirty thousand, five hundred sixteen".