19494503070 has 128 divisors (see below), whose sum is σ = 55981449216. Its totient is φ = 4247945856.

The previous prime is 19494503069. The next prime is 19494503071. The reversal of 19494503070 is 7030549491.

It is an interprime number because it is at equal distance from previous prime (19494503069) and next prime (19494503071).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19494503071) 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 63 ways as a sum of consecutive naturals, for example, 1476237 + ... + 1489383.

It is an arithmetic number, because the mean of its divisors is an integer number (437355072).

Almost surely, 2^19494503070 is an apocalyptic number.

19494503070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19494503070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27990724608).

19494503070 is an abundant number, since it is smaller than the sum of its proper divisors (36486946146).

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

19494503070 is a wasteful number, since it uses less digits than its factorization.

19494503070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13494.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 19494503070 in words is "nineteen billion, four hundred ninety-four million, five hundred three thousand, seventy".