19151970142 has 8 divisors (see below), whose sum is σ = 29976996816. Its totient is φ = 9159637872.

The previous prime is 19151970137. The next prime is 19151970157. The reversal of 19151970142 is 24107915191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19151970095 and 19151970104.

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, 208173543 + ... + 208173634.

It is an arithmetic number, because the mean of its divisors is an integer number (3747124602).

Almost surely, 2^19151970142 is an apocalyptic number.

19151970142 is a deficient number, since it is larger than the sum of its proper divisors (10825026674).

19151970142 is a wasteful number, since it uses less digits than its factorization.

19151970142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416347202.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 19151970142 in words is "nineteen billion, one hundred fifty-one million, nine hundred seventy thousand, one hundred forty-two".