19990148 has 12 divisors (see below), whose sum is σ = 35344092. Its totient is φ = 9891840.

The previous prime is 19990129. The next prime is 19990153. The reversal of 19990148 is 84109991.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 17372224 = 1618^2 + 4168^2 .

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, 25373 + ... + 26148.

It is an arithmetic number, because the mean of its divisors is an integer number (2945341).

Almost surely, 2^19990148 is an apocalyptic number.

It is an amenable number.

19990148 is a deficient number, since it is larger than the sum of its proper divisors (15353944).

19990148 is a wasteful number, since it uses less digits than its factorization.

19990148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51622 (or 51620 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 19990148 is about 4471.0343322323. The cubic root of 19990148 is about 271.3971836017.

The spelling of 19990148 in words is "nineteen million, nine hundred ninety thousand, one hundred forty-eight".