19269227148 has 24 divisors (see below), whose sum is σ = 44965803120. Its totient is φ = 6422465280.

The previous prime is 19269227143. The next prime is 19269227177. The reversal of 19269227148 is 84172296291.

It is a super-2 number, since 2×19269227148² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19269227148.

It is not an unprimeable number, because it can be changed into a prime (19269227143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65808 + ... + 207048.

It is an arithmetic number, because the mean of its divisors is an integer number (1873575130).

Almost surely, 2^19269227148 is an apocalyptic number.

It is an amenable number.

19269227148 is an abundant number, since it is smaller than the sum of its proper divisors (25696575972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19269227148 is a wasteful number, since it uses less digits than its factorization.

19269227148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152617 (or 152615 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The spelling of 19269227148 in words is "nineteen billion, two hundred sixty-nine million, two hundred twenty-seven thousand, one hundred forty-eight".