18970516 has 12 divisors (see below), whose sum is σ = 33905088. Its totient is φ = 9283352.

The previous prime is 18970513. The next prime is 18970517. The reversal of 18970516 is 61507981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18970513) 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, 50266 + ... + 50641.

It is an arithmetic number, because the mean of its divisors is an integer number (2825424).

Almost surely, 2^18970516 is an apocalyptic number.

It is an amenable number.

18970516 is a deficient number, since it is larger than the sum of its proper divisors (14934572).

18970516 is a wasteful number, since it uses less digits than its factorization.

18970516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100958 (or 100956 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 18970516 is about 4355.5155837168. The cubic root of 18970516 is about 266.7020668282.

The spelling of 18970516 in words is "eighteen million, nine hundred seventy thousand, five hundred sixteen".