19151996 has 12 divisors (see below), whose sum is σ = 35487648. Its totient is φ = 9012672.

The previous prime is 19151989. The next prime is 19152041. The reversal of 19151996 is 69915191.

It is a congruent number.

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, 140756 + ... + 140891.

It is an arithmetic number, because the mean of its divisors is an integer number (2957304).

Almost surely, 2^19151996 is an apocalyptic number.

It is an amenable number.

19151996 is a deficient number, since it is larger than the sum of its proper divisors (16335652).

19151996 is a wasteful number, since it uses less digits than its factorization.

19151996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281668 (or 281666 counting only the distinct ones).

The product of its digits is 21870, while the sum is 41.

The square root of 19151996 is about 4376.2993499074. The cubic root of 19151996 is about 267.5498308775.

The spelling of 19151996 in words is "nineteen million, one hundred fifty-one thousand, nine hundred ninety-six".