19450137651 has 16 divisors (see below), whose sum is σ = 29943857664. Its totient is φ = 10999782144.

The previous prime is 19450137649. The next prime is 19450137667. The reversal of 19450137651 is 15673105491.

It is not a de Polignac number, because 19450137651 - 2¹ = 19450137649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19450135651) 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, 4772175 + ... + 4776248.

It is an arithmetic number, because the mean of its divisors is an integer number (1871491104).

Almost surely, 2^19450137651 is an apocalyptic number.

19450137651 is a deficient number, since it is larger than the sum of its proper divisors (10493720013).

19450137651 is an equidigital number, since it uses as much as digits as its factorization.

19450137651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548530.

The product of its (nonzero) digits is 113400, while the sum is 42.

The spelling of 19450137651 in words is "nineteen billion, four hundred fifty million, one hundred thirty-seven thousand, six hundred fifty-one".