19162492740 has 144 divisors (see below), whose sum is σ = 58713258240. Its totient is φ = 5058616320.

The previous prime is 19162492697. The next prime is 19162492747. The reversal of 19162492740 is 4729426191.

19162492740 is a `hidden beast` number, since 1 + 91 + 6 + 2 + 492 + 74 + 0 = 666.

It is a super-2 number, since 2×19162492740² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19162492747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10782732 + ... + 10784508.

It is an arithmetic number, because the mean of its divisors is an integer number (407730960).

Almost surely, 2^19162492740 is an apocalyptic number.

19162492740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19162492740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29356629120).

19162492740 is an abundant number, since it is smaller than the sum of its proper divisors (39550765500).

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

19162492740 is a wasteful number, since it uses less digits than its factorization.

19162492740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 19162492740 in words is "nineteen billion, one hundred sixty-two million, four hundred ninety-two thousand, seven hundred forty".