19001490427 has 16 divisors (see below), whose sum is σ = 20244047904. Its totient is φ = 17773056000.

The previous prime is 19001490337. The next prime is 19001490451. The reversal of 19001490427 is 72409410091.

It is a cyclic number.

It is not a de Polignac number, because 19001490427 - 2¹⁹ = 19000966139 is a prime.

It is a super-2 number, since 2×19001490427² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19001490527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2726227 + ... + 2733187.

It is an arithmetic number, because the mean of its divisors is an integer number (1265252994).

Almost surely, 2^19001490427 is an apocalyptic number.

19001490427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

19001490427 is a deficient number, since it is larger than the sum of its proper divisors (1242557477).

19001490427 is a wasteful number, since it uses less digits than its factorization.

19001490427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7950.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 19001490427 in words is "nineteen billion, one million, four hundred ninety thousand, four hundred twenty-seven".