19966150 has 24 divisors (see below), whose sum is σ = 39093480. Its totient is φ = 7565760.

The previous prime is 19966129. The next prime is 19966183. The reversal of 19966150 is 5166991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9559 + ... + 11458.

It is an arithmetic number, because the mean of its divisors is an integer number (1628895).

Almost surely, 2^19966150 is an apocalyptic number.

19966150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19966150 is a deficient number, since it is larger than the sum of its proper divisors (19127330).

19966150 is a wasteful number, since it uses less digits than its factorization.

19966150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21048 (or 21043 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 19966150 is about 4468.3498072555. The cubic root of 19966150 is about 271.2885367887.

The spelling of 19966150 in words is "nineteen million, nine hundred sixty-six thousand, one hundred fifty".