19012234634 has 4 divisors (see below), whose sum is σ = 28518351954. Its totient is φ = 9506117316.

The previous prime is 19012234607. The next prime is 19012234649. The reversal of 19012234634 is 43643221091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12132361609 + 6879873025 = 110147^2 + 82945^2 .

It is a super-2 number, since 2×19012234634² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19012234594 and 19012234603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4753058657 + ... + 4753058660.

Almost surely, 2^19012234634 is an apocalyptic number.

19012234634 is a deficient number, since it is larger than the sum of its proper divisors (9506117320).

19012234634 is an equidigital number, since it uses as much as digits as its factorization.

19012234634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506117319.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 19012234634 in words is "nineteen billion, twelve million, two hundred thirty-four thousand, six hundred thirty-four".